Nutrition · Coach: every answer, checked

Energy availability = (intake minus exercise energy) divided by fat-free mass: (2100 - 700) / 48 = 29 kcal/kg FFM/day. That sits below the 30 kcal/kg FFM threshold where research shows multiple body systems become disrupted. This client is in low energy availability territory despite eating what looks like a normal amount, and the coach should raise intake on training days before anything else.

Declining performance despite consistent training, unusual fatigue, recurrent overuse injuries or stress reactions, frequent illness, low mood, poor sleep, feeling cold, and in females menstrual disruption. No single sign confirms it, but several appearing together in a hard-training client points at low energy availability. The coach's move is a fueling conversation and, if signs persist, referral to a sports dietitian or physician.

Low energy availability affects male athletes too. The IOC's RED-S framework covers both sexes: in men it shows up as suppressed testosterone, reduced libido, poor bone health, impaired recovery, and flat performance rather than the menstrual disruption seen in women. The exact male threshold is less established than the female 30 kcal/kg FFM figure, but the syndrome is well documented in male endurance athletes.

Research on within-day energy balance shows that athletes who spend many hours in a deficit have higher cortisol, suppressed resting metabolic rate, and more menstrual dysfunction even when 24-hour intake looks adequate. Hormone regulation runs on a stopwatch, not a calendar. The fix is distribution: fuel before and after the morning session and stop back-loading the day.

For events over 90 minutes, current guidance is 10-12g of carbohydrate per kg bodyweight per day for the final 36-48 hours, paired with tapered or rested training so the glycogen stays put. That means starting Thursday for a Saturday race, not a single pasta dinner Friday night. Protein and fat come down to make room, and food choices shift toward low-fiber carb sources.

Shift from bulky whole-food carbs to compact, low-fiber sources: white rice, white bread, fruit juice, sports drinks, jam, low-fiber cereals, rice cakes with honey. At 10-12 g/kg the volume of oats, brown rice, and vegetables becomes a gut problem, and high fiber raises race-day GI risk anyway. Liquid carbs carry a lot of the load without filling the stomach.

That gain is the protocol working. Each gram of stored glycogen binds roughly 3g of water, so filling stores adds 1-2kg of scale weight that is fuel plus water, not fat. Reassure him the weight is exactly what he wants on the start line and will be spent during the race. Cutting food to erase the number would empty the tank he loaded.

With under 8 hours between glycogen-heavy sessions, start carbs as soon as possible after session one at 1.0-1.2 g/kg/hour for the first 4 hours, favoring moderate-to-high glycemic sources at frequent intervals. Add 20-30g protein early for repair. This aggressive window protocol exists specifically for the short-turnaround case; it is overkill for once-a-day training.

No. The 1.0-1.2 g/kg/hour rapid-repletion protocol matters when the next hard session is under about 8 hours away. With 24 hours between sessions, normal meals that hit her daily carb target restore glycogen fully without any timing urgency. Prescribing race-style refueling to a once-a-day trainee adds cost and complexity for no return.

Redistribute. Most evidence supports roughly 0.4 g/kg per meal across 3-5 meals, which for him means about 30-40g per sitting. His breakfast and lunch sit below the dose that maximally stimulates muscle protein synthesis, while the 90g dinner runs past the point of diminishing anabolic return. Moving 20-30g from dinner into the earlier meals raises the MPS stimulus count without changing total intake or food cost.

Keep it small: roughly 300-500 kcal/day, targeting about 0.5% of bodyweight per week, with protein at the high end and training intensity untouched. Evidence shows strength can be maintained on a modest deficit, while aggressive cuts cost training quality, recovery, and lean mass. The alternative worth discussing is sequencing: finish the strength block at maintenance, then cut between blocks.

Yes. The leaner the client, the slower the cut. A client with high body fat tolerates a larger deficit and faster loss (toward 1% of bodyweight per week) with little muscle risk, because fat stores buffer the energy gap. The lean athlete should sit near 0.5% per week or slower with protein at the top of the range, since lean individuals lose proportionally more muscle at aggressive rates.

A landmark trial gave trained men about 1.5 g/kg of alcohol (roughly 12 standard drinks) after training: muscle protein synthesis dropped 24% even when co-ingested with protein, and 37% with carbs alone. Heavy drinking also disrupts sleep and rehydration. Practical coaching: get protein and a full meal in before the party, cap the dose, and accept that hard-session adaptation takes a measurable hit on big nights.

Aging muscle develops anabolic resistance: the same protein dose produces a smaller muscle protein synthesis response. Evidence supports pushing per-meal doses toward 0.4 g/kg and beyond for older adults, often 35-45g per meal, with leucine-rich sources doing the heavy lifting. Paired with resistance training, this is the most effective known defense against sarcopenia.

Bring her to estimated maintenance calories for 1-2 weeks, mostly by adding carbohydrate, while keeping protein and training structure unchanged. The MATADOR trial found intermittent restriction with maintenance blocks improved weight-loss efficiency, though later studies are mixed on the metabolic claim. What breaks reliably deliver is psychological relief, better training quality, and a diet the client can finish.

A refeed is 1-2 days at approximately maintenance with the extra calories coming mostly from carbohydrate, typically placed on the hardest training days. A diet break is 1-2 full weeks at maintenance. Refeeds mainly restore glycogen and give short-term psychological relief within a deficit week; breaks are the bigger tool for long cuts where fatigue, adherence, and training quality have degraded.

Keep the high-fiber diet for daily life, where it earns its keep, and cut fiber for the final 24-48 hours before race day, switching to low-residue carbs: white rice, bananas, juice, white bread. Race-week is also when she should skip novel foods entirely. Daily fiber and race-window fiber are separate prescriptions; conflating them is a common coaching error in both directions.

Target the upper end of the range, around 2.0-2.2 g/kg (140-155g), to offset lower digestibility and leucine content in plant sources. Anchor meals on soy and pea proteins, the most complete plant options, and combine varied sources across the day. A pea or soy isolate powder makes the math workable. Per-meal doses run slightly larger than an omnivore's to cross the leucine threshold.

Creatine monohydrate first: 3-5g daily, a few euros a month, and the strongest evidence base of any legal supplement for strength, power, and lean mass. Caffeine second, cheapest from plain coffee. Everything else waits until food, sleep, and those two are handled, with vitamin D worth testing for if he trains indoors through winter. Skip BCAAs, fat burners, and proprietary blends entirely.

Cut or drop the evening dose. Caffeine's half-life averages around 5 hours but ranges from 2 to 10 between individuals, so a 7pm dose can leave half of it circulating at midnight. Evidence on evening caffeine shows dose-dependent sleep disruption; a low dose around 1-3 mg/kg costs less sleep than a full pre-workout serving. Move the big doses to morning sessions and let the evening session run on a light dose or none.

1-4g of carbohydrate per kg bodyweight, eaten 1-4 hours before the start, scaled together: the bigger the meal, the earlier it goes in. A 70kg athlete eating 3 hours out might take 150-200g from familiar low-fiber sources. Keep fat, fiber, and protein modest, and rehearse the exact meal in training so race day contains zero experiments.

Train the gut. Progressively raise intra-session carb intake over 4-6 weeks of long runs, stepping from her current 40 g/h toward the race target while using the exact race products. The gut adapts: intestinal transporters upregulate, tolerance improves, and exogenous carb oxidation rises, with measurable changes reported within about 4 weeks of consistent practice.

Intestinal glucose absorption via the SGLT1 transporter saturates around 60 g/h. Going higher requires adding fructose, which crosses on the separate GLUT5 transporter: a glucose-to-fructose mix around 2:1 lets total absorption reach 90 g/h and beyond. Piling on more pure glucose or maltodextrin past 60 g/h mostly sits in the gut and causes distress.

Weigh him nude or in dry minimal clothing immediately before and after a timed session, towel-dried, and track any fluid consumed. Sweat loss = weight lost plus fluid drunk; 1kg of loss equals roughly 1 liter of sweat. Divide by session duration for an hourly rate, then repeat in different temperatures, since sweat rate shifts with heat, intensity, and acclimation. That number then drives his personal fluid plan.

Classic glycogen depletion. Stored muscle and liver glycogen supports roughly 60-90 minutes of sustained moderate-to-high intensity, and he is running the tank dry. The fix has two parts: start the ride topped up with a carb-rich pre-ride meal, and fuel from early in the ride at 30-60 g/h (more for longer, harder rides) instead of waiting for the wall to arrive.

Push back. Dehydration beyond about 2% of body mass measurably impairs performance and, at larger magnitudes, becomes a health risk, and recovery time after weigh-in is often too short to fully rehydrate. If a cut must happen, keep the acute component small, use evidence-described methods under qualified supervision, and fix the real problem for next camp: walking weight closer to the class limit.

Sleep-low means doing a hard evening session, withholding carbs overnight, then training easy and fasted next morning to amplify endurance adaptation signaling. Some trials in trained athletes show improved cycling economy and 10km performance after short blocks; others show no benefit, partly because low availability degrades session quality. It is a limited-block tool for experienced athletes with solid fueling, and it stacks low-energy-availability risk if run carelessly or too long.

The honest answer: current evidence does not support prescriptive phase-based macro plans. Reviews find conflicting, low-quality data on cycle-phase effects on performance and adaptation, and no established phase-specific nutrition targets. Better coaching is to keep fundamentals consistent, track her individual symptoms and energy across cycles, and adjust from her own data, while treating cycle disruption itself as a possible under-fueling red flag.

Protein and resistance training. Without intervention, studies report roughly 25-40% of GLP-1 weight loss can come from lean mass. Countering that means protein intake of at least 1.2 g/kg and preferably higher, distributed across meals, plus at least two progressive resistance sessions weekly. Appetite suppression makes eating enough protein the hard part, so protein gets scheduled first in every smaller meal.

Talk him out of the aggressive cut. Injured, immobilized tissue is already in negative protein balance, and a steep deficit accelerates muscle loss when he can least defend it. Set calories near maintenance or a small deficit at most (energy needs drop less than people assume, since healing itself costs energy), and raise protein toward 1.6-2.5 g/kg spread across meals to limit lean-mass loss.

The studied protocol is about 15g of gelatin or hydrolyzed collagen with vitamin C taken roughly 60 minutes before loading exercise. The 2017 Shaw trial found this doubled collagen synthesis markers versus placebo. Frame it honestly: the evidence is promising but still emerging, built on synthesis markers and small trials rather than proven injury outcomes. Cheap, safe, plausible; not proven.

Randomized trials show high-dose vitamin C (1000mg) with vitamin E blunted training-induced increases in mitochondrial proteins during endurance training. Exercise-generated oxidative stress is part of the adaptation signal, and megadose antioxidants mute it. Food-based antioxidants from fruit and vegetables carry no such concern. During adaptation-focused blocks, supplements should not fight the training.

The flexible dieter is more likely to succeed. Rigid, all-or-nothing restraint is consistently associated with more disinhibition, more binge episodes, and higher BMI, because one slip flips the switch to fully off. Flexible restraint tracks with lower disinhibition and better long-term weight outcomes. Coach the budget approach: nothing forbidden, everything counted.

Adherence and measurement first. Self-reported intake commonly underestimates by 20-40%, and tracking drift (untracked bites, weekend loosening, oil and sauces, restaurant guesses) explains most stalls. Verify the logs against photos or a tightened tracking week, confirm weigh-in conditions are consistent, and check whether weekly averages, not single days, are flat at all. Only after adherence checks out do you touch the calorie target.

Single days are noise. Glycogen and its bound water, sodium shifts, carb intake, gut contents, training stress, and menstrual cycle timing all move the scale 1-2kg with zero fat change. Coach clients to weigh under consistent conditions, compare rolling weekly averages, and judge trend over 2-4 weeks. A real stall is flat weekly averages across several weeks, not one loud morning.

Schedule intake instead of waiting for hunger. Hard exercise transiently suppresses appetite, so hunger is an unreliable fueling signal on exactly the days needs peak. Use liquid options first (smoothies with fruit and protein, flavored milk), then easy-eating foods, at planned times. Eating by the clock on hard days prevents the invisible deficits that stack into under-recovery.

Far slower. Evidence-based guidance for weight-gain rate scales with training age: around 0.25-0.5% of bodyweight per week for beginners, roughly 0.1-0.25% for intermediates, and no more than about 0.25% for advanced lifters. For an 80kg intermediate that is 0.1-0.2kg per week. Muscle accrues at a limited rate; surplus beyond what supports it is stored as fat and paid for in the next cut.

Save the money. A systematic review and meta-analysis of acute ketone monoester and precursor ingestion found no significant improvement in endurance performance, with several ecologically valid studies reporting neutral or even slightly negative effects. Research interest has shifted toward recovery applications, but that case is unproven too. For race-day return on spend, carbohydrate fueling and caffeine beat ketones by a wide margin.

Standard dosing is roughly 350-500mg of nitrate (about 6-8 mmol, typically 1-2 concentrated shots) taken 2-3 hours before the effort, with some athletes running several days of intake into the race. The caveat: benefits show mainly in recreational and moderately trained athletes. In highly trained endurance athletes, studies largely fail to find a performance effect, likely because their nitric oxide pathways are already well developed.

Morning, away from the 3-6 hour post-exercise window, and current absorption research favors alternate-day over daily dosing. Exercise raises hepcidin, which peaks about 3-6 hours after sessions and blocks iron absorption, and hepcidin also runs lower in the morning. Alternate-day single doses improved fractional absorption by roughly a third versus consecutive days in research, with fewer GI side effects. Pair with vitamin C, keep coffee and calcium away from the dose, and retest ferritin after about 8 weeks.

Let them run fasted. Low-to-moderate intensity work under roughly 60-75 minutes holds up fine on overnight-fasted liver glycogen for most athletes. The decision flips when duration stretches past that or the session has quality intervals in it. Preference and stomach comfort decide, not dogma.

Plan 60-90 g/h for a race this long, which lands around 225-340g total across 3:45. At 60 g/h that is about one 25g gel every 25 minutes plus on-course sports drink. Anything above roughly 60-70 g/h needs glucose plus fructose sources and gut training in the long-run block beforehand.

Twelve hours of sweet gels commonly ends in flavor fatigue and a rebelling gut. Ultras run at lower intensity, so blood flow to the gut supports real food: rice balls, salted potatoes, broth, sandwiches, alongside gels and drink mix. Mix textures and flavors, keep hourly carbs in the 30-60g range or trained higher, and plan savory options for the later hours.

Same carbs, different delivery. Drink mix couples fuel to fluid, easy on the gut but hostage to how much you can drink and carry. Gels are dense and fast but need water alongside concentrated versions. Chews let you titrate in small pieces and are easier for some stomachs, but demand chewing at high intensity. Most strong plans combine two forms and let conditions dictate the ratio.

Effective range is 3-6 mg/kg, so 210-420mg for 70kg. Start at the bottom: around 200mg taken about 60 minutes before the start. Habitual intake does not erase the effect, so daily coffee drinkers still respond. Trial the dose in a hard training session first; race morning is not the place to discover jitters or a nervous gut.

No. The rider needs carbohydrate restoration as the priority: roughly 1-1.2 g/kg/h of carbs across the first few hours if training again soon, plus 20-40g protein. The lifter barely dented glycogen; protein dose and total daily calories matter more than urgent carbs. Match the meal to what the session emptied.

State the trade-off once, in writing: keto reliably raises fat oxidation but impairs high-intensity output and exercise economy, which is most of CrossFit. Then coach the version they will do: adequate protein, electrolytes managed, calories sufficient, and track performance markers together. If their glycolytic work degrades, the data makes your case better than another lecture will.

The schedule conflict, not the diet philosophy. The hard session sits six hours from the last fuel and five-plus hours from the next, so quality suffers and recovery protein arrives late. Options in order: move quality sessions inside or near the eating window, shift the window earlier on training days, or add a targeted exception around training. The window serves the training, not the reverse.

Either works. Loading at 20 g/day split over 5-7 days saturates muscle in about a week; 3-5 g/day gets to the same place in 3-4 weeks. Same endpoint, so let GI tolerance and patience decide. Timing around workouts is a rounding error; daily consistency is the whole game. Monohydrate, nothing fancier.

The best-supported explanation is altered neuromuscular control under fatigue: overactive muscle spindles and inhibited Golgi tendon organs, not a simple electrolyte deficit. Salt cannot hurt a heavy sweater, but the higher-yield fixes are pacing discipline, race-specific conditioning of the cramping muscles, and better fueling. Frame salt as one variable, not the answer.

Hydrate through the flight since cabin air is drying, and skip alcohol. Shift meal times to the destination schedule immediately on landing, because meal timing is one of the cues that helps the body clock adjust. Pack familiar snacks so airport food does not dictate intake, and keep race-week eating to foods already tested. Nothing exotic, mostly protecting routine.

Screen ferritin before the camp. Altitude triggers a several-fold rise in red cell production and the iron demand that comes with it; low pre-camp stores can blunt the whole hematological adaptation. Many programs supplement iron at altitude even with healthy ferritin, under medical guidance. Also plan for higher carbohydrate needs and deliberate hydration in dry air, and watch appetite, which altitude often suppresses.

Heat pushes fuel use toward carbohydrate: muscle glycogen burns faster in hot conditions, so if anything his hourly carb targets rise. Sweat rate can double, so fluid and sodium plans need retesting in the new climate, not carried over. Expect gut tolerance to dip in heat too; the same intake that sat fine at home may need splitting into smaller, more frequent doses.

Downgrade to easy movement or rest; symptoms limited to above the neck permit light work but not threshold. Anything with fever, chest symptoms, or body aches means full rest, and the traditional neck-check has been criticized in recent reviews, so err conservative. On appetite: do not force big meals, but hold fluids, keep some carbs and protein coming in easy formats like soup and smoothies, and never stack a calorie deficit on top of an infection.

Trial a low-FODMAP approach for roughly the final week before race day: pull back onions, garlic, wheat-heavy meals, legumes, apples, and sugar-free polyol sweeteners, keeping familiar low-FODMAP carbs like rice, oats, and bananas. Short-term studies in runners show reduced GI symptoms on this pattern. Keep it short and specific; a permanent restriction needs dietitian oversight, and persistent GI trouble deserves medical review.

Combining works across the day, not within a single meal; the body pools amino acids. What deserves attention is the total dose and the leucine content: plant proteins tend to run lower in leucine and digest less completely, so aim slightly higher per meal, roughly 30-40g, and vary sources across the day. Soy, pea, and blends stand up well. No meal-by-meal pairing charts needed.

For athletes chasing recovery effects, the literature clusters around 1-3g combined EPA and DHA daily, with soreness reductions showing up more consistently near the top of that range taken for weeks, not days. Two fatty-fish meals a week covers much of it from food. It sits in the supported-but-modest tier: reasonable to use, unreasonable to expect much from.

Test, then dose. A 25(OH)D blood test tells you where they stand; below roughly 30 ng/mL is commonly treated in athletes, often with around 2000 IU/day and a retest after 2-3 months. This client's profile, indoor sport at high latitude, makes low status likely, so testing is worth the cost. Blind high-dose supplementation skips both the baseline and the safety ceiling.

Her history changes the risk math: energy availability is the first lever for bone, and repeated stress fractures with a leanness push is a pattern that points toward RED-S screening. Keep energy availability up, around 45 kcal/kg lean mass on training days and never chronically below 30, secure calcium and vitamin D, and coordinate with her physician or a sports dietitian before any deficit. Bone history outranks race weight.

Match day scales carbs up: roughly 6-8 g/kg in the ~24 hours around a match, a familiar carb-forward meal 3-4 hours before kickoff, and carbs plus fluid at halftime. Ordinary technical or gym days need less, closer to 3-5 g/kg, matched to that day's load. The mistake is a flat daily intake: it under-fuels matches and over-fuels light days.

Engineer the failure point, not the willpower. Sunday batch-cooking two extra portions that live in the freezer for exactly this scenario beats any lecture. Add a default takeaway order chosen in advance that fits the plan, so the decision is pre-made under fatigue. Adherence problems are usually logistics problems wearing a discipline costume.

Rank by cost per 20-30g serving, not per package. Eggs, milk, cottage cheese, canned tuna, frozen chicken thighs, and dried legumes usually anchor the cheap end; whey powder bought in bulk often lands mid-pack and beats most bars and ready-drinks by a wide margin. Build the day from two or three cheap staples and let variety be the garnish, not the budget.

For the cut itself, diet drinks displace caloric ones and short-term trials show they can support modest weight loss versus sugar. The catch is long-term: the WHO's 2023 review found no sustained body-fat benefit from non-sugar sweeteners and flagged possible associations with worse long-term outcomes, so they are a transition tool, not a health strategy. Within a counted deficit, three cans will not stall anything.

Self-reported intake under-reports by roughly 10-30% against doubly labeled water, and in some groups the gap runs larger. Untracked oils, bites, weekend drift, and portion misjudgment are the usual suspects, not thermodynamics. Coach the logging before adjusting the plan: a few days of weighed intake or photo logging usually finds the missing several hundred calories.

This cluster, food secrecy, ritualized weighing, distress over normal fluctuation, compensatory exercise, sits beyond a coach's scope. The move is a private, non-accusatory conversation naming what you have observed, followed by referral to a physician or eating-disorder specialist, and coordinating rather than diagnosing. Coaches spot patterns and open doors; treatment belongs to clinicians. Waiting for weight loss to confirm it waits too long.

Replace the cheat frame with a planned free meal. A cheat day can erase a week's deficit in one sitting and trains an on-off relationship with food; one planned unrestricted meal, eaten with attention and without guilt, delivers the psychological release at a fraction of the caloric damage. The word matters too: cheating implies rules and sin, and that framing feeds the restrict-binge loop.

Stack the satiety levers: push protein toward 2 g/kg or higher and place a solid dose at dinner, raise food volume with vegetables, potatoes, and soups, keep fiber up, and check sleep, since short nights amplify appetite. Redistribute calories toward the hungry hours; a lighter lunch buying a bigger dinner is a legal trade. Hunger management is architecture before arithmetic.

NEAT compression. In a deficit, non-exercise movement, walking, fidgeting, pacing, quietly declines, and that can erase 200-400 kcal/day, most of the planned deficit. The gym sessions never changed; the other 23 hours did. Fix it with a hard step floor tracked on his Garmin rather than cutting food further and inviting more compression.

The mechanism story outruns the data: controlled trials showing reverse dieting restores metabolic rate better than going straight to maintenance are lacking. Metabolic adaptation mostly tracks body mass and the deficit itself, and it eases when the deficit ends either way. A slow ramp is a fine appetite-control and psychological tool; sell it as that, not as metabolic repair.

It has real evidence behind it: roughly 40g of casein about 30 minutes pre-sleep raises overnight muscle protein synthesis, and evening training amplifies the response. Cottage cheese, skyr, or a casein shake all deliver it. Frame it as one more well-placed feeding that lifts the daily total, not a magic window; total daily protein still dominates the outcome.

Protein and bone support. Anabolic resistance plus lost estrogen argue for protein at the higher end, roughly 1.6-2.2 g/kg/day split into solid 30-40g doses, paired with lifting. For bone: calcium around 1000-1200 mg/day, food first, vitamin D status checked, and impact plus strength work as the stimulus. HRT and bone-density questions go to her physician alongside, not instead of, this.

She trains fasted, then stays in a deep hole for seven more hours, so the crash and the evening raid are the bill arriving. The fix is not dropping the coffee; it is closing the gap: even a small carb-plus-protein intake within an hour or two post-session steadies afternoon energy and defuses the 9pm pantry. Within-day fueling pattern matters, not only the daily total.

Recovery starts at Saturday's finish line: carbs at roughly 1-1.2 g/kg/h for the first few hours plus 20-40g protein, then a carb-forward evening meal and normal hydration with sodium. Skip the celebratory beers until Sunday is done. Sunday morning runs the standard pre-race playbook with familiar foods. With under 24 hours between efforts, aggressive early refueling is the difference-maker.

Yes: carbohydrate mouth rinsing. Swishing a carb solution for 5-10 seconds and spitting it out improves performance by roughly 2-3% in efforts of about 30-75 minutes, comparable to ingesting carbs at that duration. Oral carb receptors signal the brain and lower perceived effort; no digestion required. Beyond about 75 minutes it stops substituting, because then the muscles need the fuel itself.

A concentrated sodium drink at roughly 10 ml/kg of fluid with a high sodium concentration, around 160 mmol/L, which works out near 35-40 mg sodium per kg, sipped across the hour before warm-up and finished about 45-60 minutes pre-start. Research shows this expands plasma volume, slows the rise in core temperature, and extends time to exhaustion in the heat. It suits heavy, salty sweaters in hot events specifically; it is not a daily habit, and athletes with blood pressure concerns should clear it medically first.

Excess plain water in race week mostly produces clear urine and diluted sodium, and carried into a long hot race that habit points toward hyponatremia, which is more dangerous than mild dehydration. Drink to thirst through the week with normal salted food, keep urine pale yellow rather than clear, and save deliberate strategies like sodium preloading for race morning if she is a heavy sweater.

Neither extreme. The first days keep carbs and protein generous, repair and glycogen restoration continue after the race, then intake settles toward the new, lower training load. No tracking-app austerity in week one: appetite is unreliable post-race, tissue repair has a bill, and immune function dips after marathons. Loose maintenance eating for a week or two costs nothing against the season.

Frame it as a performance experiment with an end date, not a moral stand: eight weeks dry, watch resting HR, sleep quality, and morning readiness on his Garmin, then decide with the data. Give him a social script, ordering an alcohol-free beer closes most conversations, and tie it to the goal race, not to virtue. Athletes keep protocols; they abandon sermons.

DEXA is a decent periodic anchor but has real day-to-day error from hydration and glycogen, so monthly scans mostly measure noise at recomp speed. The workhorse tools are trends: 2-4 week averages of morning weight, waist measurement, gym numbers, and progress photos under fixed conditions. Scan twice a year at most, same machine, same morning conditions, and read direction, not decimals.

Keep it high. Around 1.6-2.2 g/kg still serves the maintenance phase: it protects lean mass while the body settles at the new weight, blunts the elevated post-diet appetite, and supports the training quality that consolidates the result. What relaxes is the deficit and the tracking intensity, not the protein floor. Many regains start with the protein quietly sliding first.

Match energy and carb intake to the phase, not to a fixed daily number. Base tolerates modest energy adjustments and lower daily carbs; build and peak need full fueling because intensity is the stimulus you cannot afford to blunt. The taper keeps carbs up while volume drops. One static macro plan across all four phases mismatches at least two of them.

Carb intake is set day by day against the demands of the next session, not held constant. Hard interval days get high carb availability; easy aerobic days can run lower. The athlete eats for the work on the schedule, which is why the framework needs a written training plan to function.

Train-low reliably amplifies molecular signaling and oxidative enzyme responses, but most studies show no clear performance improvement over high-carb training, and a share show performance loss when hard sessions get compromised. Use it selectively on easy sessions, roughly a minority of the week, and never on the key workouts.

Off-season: pull carbs toward the reduced workload, keep protein steady, and use the low-demand window for body composition work, a controlled surplus or a modest deficit. In-season: maintenance, full fueling around competition, no deficits, because output and recovery are the product. Racing lean is a peak-week state, not a year-round lifestyle.

General fueling for performance, portion frameworks, and correcting misinformation sit inside a coach's scope. Any disease state with a dietary component, suspected eating disorder, or need for an individualized prescribed meal plan goes to a registered dietitian; complex performance cases like RED-S rebuilds or contest prep recovery suit a sports dietitian specifically. Red-flag symptoms, missing cycles, suspected low testosterone, chest pain, fainting, rapid unexplained weight change, go to a physician first. Prescribing meal plans without credentials is off limits in most jurisdictions.

Trim overall calories slightly if anything, but hold or raise carbs into the final 2-3 days at 8-12 g per kg for the load. Expect the scale to rise 1-2 kg because each gram of stored glycogen binds roughly 3 grams of water. That is fuel on board, not fat, and it is gone by halfway through the race.

Growth plus training stacks energy demands; adolescent male athletes commonly need 2,600-3,500 kcal or more, and chronic shortfall risks delayed puberty, impaired bone development, and injury. Coach food as fuel around sessions, get the calorie ceiling removed, and if restriction persists or growth stalls, refer to a pediatrician or sports dietitian.

Decline the cut. Weight manipulation in a growing athlete risks bone development, hormonal maturation, and a lasting distorted relationship with food, and prescribing it sits outside a coach's scope. Offer to build strength and skill at the natural weight, and route any weight-class decision through a physician or sports dietitian who works with youth athletes.

Energy needs rise by roughly 340 kcal per day in the second trimester and about 450 in the third, before adding back what training burns. Heart-rate baselines shift, so hunger and effort cues need recalibrating too. Your role is general fueling support around her sessions; specific prenatal nutrition questions and any complications go to her OB and a dietitian.

Lactation alone costs roughly 450-500 kcal a day, and training adds its own bill on top, so her total need often exceeds late pregnancy. An aggressive deficit now threatens milk supply, energy, and recovery from birth. Coach a gentle approach: fuel training fully, accept slow trend-based loss at most, and coordinate with her physician and a dietitian.

Anchor the biggest meals to daylight hours and keep the overnight shift to light, smaller eating, since night eating under circadian misalignment impairs glucose tolerance. Keep a consistent pre-training meal relative to the session regardless of clock time. Perfect is not available here; a repeatable daytime-weighted pattern beats grazing around the clock.

The plan and daily totals stay the same; the placement moves. The 5 AM client either trains after a small quick-carb hit or fasted for shorter sessions, with breakfast doing the recovery work. The 9 PM client shifts a real carb meal to late afternoon and keeps the post-session meal light enough to protect sleep. Same math, different clock positions.

Rank the sessions. The long run and any quality run day get the highest carb intake the day before and same day; lifting days sit in the middle; the rest day runs lowest. Protein stays flat all week. This is fuel for the work required applied across two sports instead of cutting calories evenly and under-fueling the run that needs it most.

Front-load a normal carb-rich breakfast 3 hours out, then eat by the gaps: with 2 hours or more between events, a small real-food meal of quick carbs and some protein; under an hour, liquid carbs or a gel plus fluids only. A carb dose of roughly 30-60 g in each gap keeps glycogen topped up across the day. Nothing high-fiber or high-fat after the first event, and nothing new on competition day.

Yes, at that duration it pays. Race-pace mixed work drains glycogen fast, and events beyond about an hour benefit from carbs, so an 80-minute racer takes 30-60 g of carbs per hour: practically, an isotonic gel around minute 25 and another around minute 50, with sips of fluid at stations. A sub-60 elite can get away with a carb rinse and a strong pre-race meal.

Carry the fuel, do not depend on the course. Target 45-60 g of carbs per hour from gels or chews stored in a waterproof pocket or vest, eating to time on a watch alarm rather than to landmarks, since queues wreck pacing-based plans. Practice eating with elevated heart rate and cold, wet hands in training, and add electrolytes for a race that long.

Cold water inflates the energy bill through shivering and thermoregulation, and it also drives post-exercise appetite up; research comparing cool versus warm water exercise found meaningfully higher calorie intake afterward. The fix is planning: a substantial carb and protein meal ready immediately after exiting, so refueling is deliberate instead of a ravenous free-for-all an hour later.

Rehydration first, food second. Start fluids with electrolytes immediately after the weigh-in, around a liter early then steady sips, and run easily digested carbs alongside, on the order of 50 g soon after weigh-in and topping up between attempts. Nothing high-fat or high-fiber, and every item rehearsed in training. Two hours recovers a small cut, not a big one.

Stage leanness reliably suppresses thyroid and sex hormones, drops resting metabolic rate, and strains mood and menstrual function; these are documented costs, not signs of a bad prep. Your responsibility is informed consent up front, a planned recovery phase before day one of the cut, and monitoring beyond the mirror. Signs of disordered eating or health decline mean pausing and referring out.

Treat recovery as a structured phase, not a food free-for-all. Raise calories deliberately toward maintenance and beyond in steps, expect and normalize fat regain toward a healthy set range, and track mood, sleep, cycle, and training quality rather than fighting the scale. Rapid unplanned bingeing and rapid regain both delay hormonal recovery; a planned climb protects it.

This is a RED-S picture, and it is beyond a nutrition tweak. Name what you see without judgment, connect the missing cycle and fractures to fueling rather than to training load, and make continued coaching conditional on medical involvement: physician for the amenorrhea and bones, sports dietitian for the rebuild. You keep the training relationship; you do not treat this alone.

Under-fueling. Low energy availability suppresses testosterone in men, and reduced libido and lost morning erections are recognized early flags, alongside the fatigue and stalled training. Screen his intake against that mileage, raise fueling around sessions, and send him to a physician for bloodwork. What you never do is suggest supplements or hormone fixes; that call belongs to the doctor.

No. Experimental sleep restriction raises next-day intake by around 385 kcal on average in meta-analysis, skewed toward higher fat intake and snack foods, with elevated ghrelin one likely driver. Treat sleep as part of the nutrition plan: a consistent lights-out target and a screen cutoff often do more for their adherence than another macro adjustment.

Build a deadline protocol instead of demanding willpower. Pre-decide the crunch-week menu: batch-cooked or pre-ordered default meals, protein-forward snacks at the desk, and an explicit lower-effort target such as holding protein and roughly maintenance calories rather than the deficit. Stress eating thrives on decision fatigue; removing the decisions removes most of the damage.

Total daily protein remains the main driver, so two large feedings of a high daily total still builds muscle well; the evidence gap between two and four feedings is small next to the gap between adequate and inadequate totals. Set 1.6-2.2 g per kg across the two meals, place one within a few hours of training, and stop fighting a pattern that fits their life.

Conditionally. Caffeine taken within a few hours of a meal can reduce acute intake in some studies, the drink is near zero calories, and skipping breakfast is a legitimate deficit structure. The risks: findings are inconsistent, late cups wreck sleep which rebounds on appetite, and coffee replacing food entirely can slide toward under-fueling around morning training. A tool, not a pillar.

As a swap for sugared soda it is a clear win: several hundred calories removed at zero adherence cost, and trials show sweetened-for-sugar substitution helps weight control. Worth mentioning honestly: the WHO issued a conditional recommendation against relying on sweeteners for long-term weight control based on observational signals, a debated call. Practical answer: good swap, and drift toward water over time.

At maintenance, a planned weekly session that fits the calories and does not follow key training is livable. In a deficit the math turns hostile: alcohol carries 7 kcal per gram, those 6 beers are roughly a fifth of a small weekly deficit, drinking degrades that night's sleep and next-day appetite control, and it displaces protein. Cut it to a defined smaller dose or park it for the phase.

Give them a repeatable ordering algorithm, not a lecture: anchor the plate on a palm-plus of protein, order sauces and dressings on the side, choose one indulgence per meal instead of three, and log a generous estimate on the spot since restaurant portions run 20-40 percent above home-cooked guesses. Scanning the menu before arriving removes the on-the-spot decision under social pressure.

Hand portions: each meal gets a palm or two of protein, a fist of vegetables, a cupped hand of carbs, a thumb of fats, scaled to their size and training day. Pair it with two objective tripwires, a weekly weigh-in trend and how a reference pair of trousers fits, with a pre-agreed rule for when a drift triggers a brief return to tracking. Structure without arithmetic.

Gradually, like a deload. Start with one untracked meal a week eaten to the portion framework, review that nothing broke, then expand to untracked days and eventually tracked check-in weeks only. The anxiety fades through evidence, each untracked meal that does not move the trend line. If the anxiety worsens instead, or food rules keep tightening, that is disordered-eating territory and warrants a referral.

The one showing red flags a deficit would worsen: a history or signs of disordered eating, current under-fueling with missing cycle or RED-S symptoms, pregnancy or breastfeeding without medical guidance, an adolescent still growing, or someone 6 weeks into a race build whose performance is the actual goal. For them the first block is maintenance, habits, and where indicated a referral.

No. The dose-response curve flattens hard: around 1.2-1.6 g per kg captures most of the muscle-related benefit for a training adult, and 1.6 is where average gains plateau in meta-analysis. A consistently eaten 1.3 outperforms an abandoned 2.2. Lock in the achievable floor, bias it toward the post-training meal, and revisit the target only if their goals escalate.

One layer at a time. Weeks 1-4: training habit plus one food behavior, usually protein at each meal and liquid calories out. Only once those hold do you formalize a moderate deficit, and tracking comes last if ever. Beginners at higher body fat also recomp readily, so early strength work plus protein delivers visible change before any strict counting begins. Stacking all interventions on day one predicts a quit by week six.

Recomp, not a surplus. Novices at higher body fat are the strongest responders to concurrent muscle gain and fat loss: maintenance calories or a slight deficit, protein around 2 g per kg, and progressive lifting will add muscle while the waist shrinks. A surplus on that starting point mostly banks fat they will pay to remove later. Save the deliberate bulk for when they are leaner and their newbie gains have slowed.

That scale stillness is the design working. In recomposition, muscle gained offsets fat lost, so progress shows in measurements, photos, gym numbers, and clothing rather than in weight. The evidence supports recomp best in beginners, returners after a layoff, and higher body-fat clients eating high protein near maintenance; in lean trained athletes the effect is marginal and slow. Review the tape and the training log, not the scale.

Aim for roughly 1.2-1.5 g per kg per day, above standard adult guidance, because aging muscle shows anabolic resistance: it needs a larger stimulus, both mechanical and dietary, to trigger the same synthesis response. Practical delivery matters as much as the number, since appetite often shrinks with age; 25-35 g at each meal, with dairy, eggs, and fish doing heavy lifting, works better than one large dinner.

Raise calorie density, lower chewing and bulk. Swap some solid meals for liquid ones, since blended calories blunt fullness less; add oils, nut butters, granola, dried fruit, and full-fat dairy; trim raw vegetable volume and some fiber during the phase; and slot an extra eating occasion before bed. The target is more energy per unit of stomach stretch, not more discipline at a full plate.

Strip them in fat-loss phases; drinks poorly trigger fullness, so a smoothie habit can quietly erase a deficit. Add them on purpose in three cases: the low-appetite gainer who cannot chew a surplus, the athlete needing carbs during or right after long sessions when solids will not sit, and the multi-event competition day with short gaps. Same physiology, weak satiety per calorie, exploited in opposite directions.

Fuel the ride like a race rehearsal at 60-90 g of carbs per hour so the run starts stocked, take a gel early in the run, then treat the gap to the swim as a recovery window: carbs plus protein within the first hour and a real meal after. The day's total carb intake lands high, often 8 g or more per kg, because the second and third sessions are paid for by what you ate during and after the first.