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Fuelling & performance nutrition for yoga

An honest, evidence-based guide to eating and drinking around yoga. The headline is a calm one: most yoga is light-to-moderate in energy cost, so your ordinary meals already cover it. What deserves some thought is comfort (what sits well before twists, folds and inversions), fluid and heat safety in hot yoga, sensible protein if you also strength-train, and an honest picture of what yoga adds to a fat-loss phase. This covers each of those, how the main styles differ, and how a yoga session shows up in your day's numbers.

Here's the short answer to "how should I fuel for yoga?": eat normally and arrive comfortable. A light stomach suits most people, and a small, plain snack is fine if you would otherwise feel weak or light-headed. For most classes, water to thirst is all the extra you need. Hot yoga is the one style worth planning for, because the heat raises sweat loss and heart rate far more than it raises energy use: start well hydrated, drink during and after, and stop at the first signs of heat illness. Everything below is the detail behind that sentence (and, honestly, why so little of it is about food).

Pair this with the yoga strength and conditioning guide for the strength side of a yoga practice, the training companion to this fuelling guide.

On this page

  1. What a yoga class actually asks of your body
  2. Everyday meals fuel most yoga
  3. Before practice: empty stomach or a light snack?
  4. Hot yoga: fluid, electrolytes and heat safety
  5. After practice: protein and recovery
  6. Yoga and fat loss: the honest energy cost
  7. Where Strathlon fits
  8. Common questions
  9. Takeaways
  10. References

A framing note before the (fairly few) numbers. Sports nutrition is well studied, and the honest starting point for yoga is that most of what fills a running or cycling fuelling guide belongs to those sports. So this is written as can, tends to and around, the language of probability, and every specific figure is a population-level guide drawn from published research, for you to tailor to your own needs. It's general education for a broad audience; for medical or dietary advice and a personalised plan, turn to a qualified professional.

What a yoga class actually asks of your body

Exercise scientists describe energy cost in METs (metabolic equivalents). One MET is roughly the energy you use sitting quietly, so a 3-MET activity uses about three times that. On the usual classification, anything under 3 METs counts as light intensity and 3 to 6 METs as moderate.[1] The 2024 Adult Compendium of Physical Activities, the standard published reference for the energy cost of human activities, lists the main yoga styles like this:[2][3]

Style (Compendium entry) METs Intensity What drives it
Hatha / gentle 2.3 Light Slower pace, held poses and rests between them.
Vinyasa / flow 2.7 Light Poses linked continuously with the breath.
Hot yoga 3.0 Light to moderate A heated room, which adds more to heart rate and sweat than to energy use.
Sun salutations (Surya Namaskar) 3.5 Moderate A repeated, flowing whole-body sequence.
Power yoga 4.0 Moderate Faster, more athletic sequences with more strength work.

(The Compendium also carries a "hatha, high intensity" entry at 8.0 METs, an outlier for unusually vigorous practice.[3]) Laboratory measurements agree. A systematic review found full yoga sessions averaged around 2.9 METs once one outlying study was set aside, with most sessions and poses in the light band and sun-salutation sequences the main exception.[1] A 56-minute beginner hatha session averaged 2.5 METs, about the same as walking slowly at 3.2 km/h,[4] while an hour of vinyasa averaged 3.6 METs: moderate activity, though still below a brisk walk at 4.4 METs.[5]

At light and moderate intensities your body runs on a blend of fat and carbohydrate weighted towards fat, and draws only lightly on the carbohydrate stored in your muscles and liver (glycogen). A yoga class leaves most of that tank in place, so carbohydrate-per-hour targets, gels, sports drinks and carb-loading belong to efforts that can drain it, such as a long run or a football match. What matters for yoga is comfort, fluid and, in a hot room, heat.

Common misconception → correct it. "Yoga is exercise, so I should fuel it like exercise: a pre-workout snack and a sports drink." For almost every class, you can happily skip both. Those tools exist for long or hard efforts that drain glycogen, and yoga sits at the gentle end of the energy spectrum. Your last ordinary meal already covers it, and a sugary sports drink mostly adds energy beyond what the class used.

Everyday meals fuel most yoga

For a typical hour on the mat, the fuelling plan is your ordinary diet. The joint position stand on nutrition and athletic performance from the Academy of Nutrition and Dietetics, Dietitians of Canada and the American College of Sports Medicine frames sports nutrition as matching food to the actual training load, and stresses that needs are individual.[6] Yoga sits at the light end of that spectrum, so balanced meals with some protein, some carbohydrate-rich food and plenty of vegetables and fruit are all most people need.

A little more planning makes sense in a handful of situations:

  • Longer or stacked days. Workshops, retreats or two classes in a day add up. Keep to regular meals and carry a simple snack.
  • Yoga on top of other training. When a power class shares a day with a hard gym or sport session, the other session sets your fuelling needs and yoga adds a modest extra.
  • Feeling flat, shaky or light-headed in class. That's usually a sign it's been too long since you last ate. A small snack beforehand tends to fix it.
  • A medical condition that affects blood sugar. If you have diabetes or take glucose-lowering medication, follow your own clinician's advice about eating around exercise.

One honest caution for fat-loss phases: a post-class smoothie or treat can easily contain more energy than the class used. Eat after yoga because you're hungry or it's mealtime, and let the class be a genuine addition to your day's activity.

Before practice: empty stomach or a light snack?

The one fuelling question that really matters for yoga is comfort. Twists, deep forward folds, backbends and inversions press on, turn or invert the abdomen, and a full stomach can make those shapes unpleasant. Research on exercise and the gut points the same way: fibre, fat, protein and fructose eaten close to exercise are all associated with a greater risk of gastrointestinal symptoms, and body position matters too (cyclists report more upper-gut symptoms, possibly from the pressure a low, crouched riding position puts on the abdomen).[7] Yoga poses are yet to be studied in the same way, but the logic carries across.

  • An empty or light stomach suits most people for a class of an hour or so, and for most healthy adults it's perfectly fine.
  • If you'd otherwise arrive hungry, shaky or light-headed, have something small, plain and low in fibre and fat: a banana, a couple of rice cakes, a small pot of yoghurt or a slice of toast.
  • Leave a bigger gap after a large or rich meal. How long you need is individual, so experiment before a gentle class first, as gut researchers advise athletes to do with any new nutrition habit.[7]

If you regularly feel faint or dizzy in class despite eating and drinking sensibly, tell your teacher so they can offer gentler options, and get it checked with a GP.

Common misconception → correct it. "Yoga has to be done on a completely empty stomach." Many teachers suggest practising on an empty or light stomach, and for twists and inversions that's sound practical advice. A small, plain snack is still a perfectly reasonable choice if the alternative is arriving hungry and light-headed. Comfort is the rule: light enough to fold and invert happily, fed enough to concentrate.

Hot yoga: fluid, electrolytes and heat safety

Hot yoga is where a yoga fuelling guide earns its keep, and it's mostly about water and heat. The heat changes how hard a class feels and how much you sweat far more than it changes the energy you use. In a randomised crossover study, the same roughly 20-minute routine was performed at about 35 °C and at about 22 °C. Oxygen use was the same in both (around 31% of maximum), yet heart rate was higher in the heat (67% versus 61% of maximum) and so was perceived effort.[8]

Sweat is what really changes. In a laboratory study of a standardised 90-minute hot yoga class, sweat rates averaged around 0.6 kg an hour in novices and 1.1 kg an hour in experienced practitioners, who also used more energy and reached higher heart rates.[9] Sweat and sodium losses vary widely between people, so your own numbers may sit well above or below those.[10] The American College of Sports Medicine's position stand on fluid replacement suggests drinking enough to avoid losing more than about 2% of body weight, and estimating your sweat rate by weighing yourself before and after exercise.[11] For perspective, 2% of 60 kg is 1.2 kg, so at the higher sweat rate above, a 90-minute hot class could pass it for someone who skips drinking.

A simple hot-yoga fluid plan

  • Arrive hydrated. Drink normally through the day so you start class topped up.
  • Take water in and sip during class. In a survey of 700 hot yoga participants, drinking before or during class was associated with fewer self-reported dehydration symptoms.[12]
  • Replace the rest afterwards with drinks and your next meal or two.
  • Drink to thirst, and let thirst set the amount. Over-drinking far beyond what you sweat is the main cause of exercise-associated hyponatraemia (dangerously diluted blood sodium), which is why the international consensus favours drinking to thirst.[13]
  • Add electrolytes when it makes sense. For a single class, water plus the sodium in your next meal is usually enough. Electrolyte drinks can beat water alone "under certain circumstances",[11] which for hot yoga means heavy, salty sweating, more than one hot class in a day, or cramping; exercise-associated cramps usually respond to rest and to replacing fluid and salt.[14]
Session Food Fluid Notes
Hatha / gentle, about an hour Everyday meals To thirst Normal meals cover it. Comfort is the only real consideration.
Vinyasa or power, about an hour Small snack if hungry Bring water, sip to thirst Still well within what normal meals cover.
Hot yoga, 60–90 minutes Small, plain snack if needed Start hydrated, sip in class, replace afterwards Weigh before and after to learn your sweat rate. Add salt or electrolytes if you sweat heavily.
Workshops, retreats, two classes a day Regular meals and snacks Steady fluid with some sodium Treat it as a long active day, with protein at each meal.

Heat safety: know the warning signs

The ACSM position stand on exertional heat illness notes that people who are yet to acclimatise to heat, dehydrated, recently ill or taking certain medications are more prone to collapsing from exhaustion in the heat.[14] So keep your first few hot classes easy, rest whenever you need to, and skip hot yoga while you're unwell.

  • Signs of heat exhaustion include tiredness, dizziness, headache, nausea, heavy sweating with pale, clammy skin, cramps and intense thirst. Stop, move somewhere cool, sip fluids and cool your skin: most people feel better within about 30 minutes.[15]
  • Signs of heatstroke include confusion, lack of coordination, hot skin that has stopped sweating, fast breathing, a seizure or loss of consciousness, or still feeling unwell after 30 minutes of cooling. That's a medical emergency: call 999 (or your local emergency number) and cool the person while help comes.[15] The ACSM's expert consensus stresses stopping activity and rapid whole-body cooling, because time matters.[16]
  • Pregnancy. The American College of Obstetricians and Gynecologists (ACOG, United States) advises avoiding hot yoga in pregnancy because it may cause overheating, and avoiding high heat and humidity when exercising while pregnant.[17][18]
  • Heart or other medical conditions. Heat adds strain to the heart and circulation, as the higher heart rates above show, so get advice from your own clinician before starting hot yoga.
Common misconception → correct it. "Hot yoga burns a huge number of calories: look how much I sweat and how much lighter I am afterwards." The weight lost in a hot class is mostly water, and it comes straight back when you drink, as it should. Heat raised heart rate while oxygen use stayed the same in the crossover study,[8] and a full 90-minute hot class measured in the laboratory averaged around 290 kcal (range about 180 to 480), well below the "up to 1,000 calories" sometimes claimed.[9] Enjoy hot yoga for how it makes you feel, drink to replace the sweat, and count the energy modestly.

After practice: protein and recovery

A gentle or flowing class causes little muscle damage and uses little glycogen, so your next ordinary meal is your recovery meal. The International Society of Sports Nutrition (ISSN, United States) notes that the muscle-building effect of exercise lasts at least 24 hours, so daily totals matter far more than racing to eat after class.[19]

Protein. For exercising people aiming to build or maintain muscle, the ISSN recommends around 1.4–2.0 g per kilogram of body weight per day, spread across meals in servings of roughly 20–40 g every three to four hours.[19][20] A meta-analysis of resistance-training studies found that gains in lean mass plateaued once total intake reached about 1.6 g/kg/day.[21] If yoga is your main activity, a balanced diet with a good protein source at each meal tends to be enough. If you also follow a workout plan with strength training, aim for the ISSN range; the companion training guide explains why that strength work is worth adding.

Carbohydrate. After a power or hot class on a day with other training, a normal carbohydrate-containing meal restores what you used. Rapid refuelling strategies are only really needed when another hard session follows within about four hours,[20] which is rare in a yoga week.

Common misconception → correct it. "I need a protein shake straight after yoga or I'll lose the benefit." The window for eating after a yoga class is a wide one. Total daily protein, spread across meals, plus the strength work you do, is what maintains and builds muscle. A shake is simply a convenient top-up if your meals fall short.

Yoga and fat loss: the honest energy cost

Yoga has a lot to offer, and it's worth being straight about its energy cost. A gentle hatha hour costs about the same as a slow walk,[4] and a vinyasa hour reaches moderate intensity but uses less energy than a brisk walk of the same length.[5] In community-style classes measured with heart-rate monitors, participants spent on average about a third of class time at moderate intensity, with statistically similar results for faster and slower tempos and for heated and unheated rooms.[22]

The trial evidence fits. A systematic review of 30 randomised trials with 2,173 participants found that, across everyone studied, yoga's effect on body weight, body mass index (BMI), body-fat percentage and waist size was too small to detect. Among people with overweight or obesity, yoga did reduce BMI compared with usual care, though the authors caution that this result was sensitive to possible bias.[23] The fair reading: yoga can be a useful part of a fat-loss phase, chiefly because it's easy to recover from and easy to keep doing, while the eating side does most of the work. Our fat-loss fundamentals guide lays out how the two fit together.

Common misconception → correct it. "My heart rate was high all class, so I must have burned loads and can eat it back." In yoga, heart rate can run ahead of energy use. Walking at the same heart rate as a vinyasa class used noticeably more energy than the class itself,[5] and a hot room raises heart rate while oxygen use stays the same.[8] So calorie estimates built mainly on heart rate can run high for yoga. Treat yoga's energy as a modest bonus, and judge fat-loss progress by the trend in your weight and measurements over weeks.

Where Strathlon fits

Where Strathlon fits. Strathlon treats yoga as a sport in its own right. You'll find Yoga in the main sports list under Gymnastics & Fitness, by browsing or by searching (style names such as "vinyasa" find it too), with four session types: Hatha / Gentle Yoga, Vinyasa / Flow Yoga, Power Yoga and Hot Yoga, each 60 minutes by default. Yoga has practice sessions only, so every yoga day on your plan is a practice day. Your scheduled yoga sessions sit on the days you choose, and on the Nutrition tab a day with a yoga session is filed under the Sport Training target type, alongside Training and Rest. Each session adds a modest, conservatively estimated amount of energy to that day's calorie allowance, based on the published energy cost of that style and scaled to your body weight, so a power class is credited more than a gentle hatha one. A one-off class can be logged with + Add activity on the Plan tab. Once you have allowed Strathlon to read workouts from Apple Health, a Yoga workout you record on Apple Watch, or that another app saves to Apple Health, is matched to that day's planned yoga session. If you already log yoga as a gym class (Gym classes still lists Yoga, Hot Yoga and Power / Flow Yoga), that works too: either route is fine.

Common questions

Should I do yoga on an empty stomach?

An empty or light stomach suits most people, mainly for comfort in twists, forward folds and inversions, and it's fine for most healthy adults doing a class of an hour or so. If you'd otherwise arrive hungry, shaky or light-headed, a small, plain snack such as a banana or a small yoghurt tends to sit well. Leave a bigger gap after a large or rich meal. If you have diabetes or take glucose-lowering medication, follow your clinician's advice.

What should I drink for hot yoga, and do I need electrolytes?

Arrive well hydrated, take water into class and sip to thirst, then replace the rest afterwards. Weighing yourself before and after a class shows your own sweat losses; the American College of Sports Medicine suggests avoiding losing more than about 2% of body weight. For a single class, water plus your next meal is usually enough. An electrolyte drink or salty snack helps if you sweat heavily, do more than one hot class in a day or get cramps. Avoid forcing down far more than you sweat.

How many calories does yoga burn?

Less than many people expect. The 2024 Adult Compendium of Physical Activities puts hatha yoga at 2.3 METs, vinyasa at 2.7, hot yoga at 3.0 and power yoga at 4.0, where 1 MET is roughly your resting energy use. A gentle hatha hour costs about the same as a slow walk. Heat raises heart rate and sweat more than energy use. Yoga's value lies mainly in mobility, strength-endurance, balance, breathing and recovery.

Do I need a protein shake after yoga?

Your everyday meals cover post-yoga protein. Daily totals, spread across meals, matter far more than timing. If yoga is your main activity, protein at each meal tends to be enough. If you also strength-train, the International Society of Sports Nutrition suggests around 1.4 to 2.0 g per kilogram of body weight a day, in servings of about 20 to 40 g. A shake is just a convenient top-up.

Can yoga help me lose fat?

It can be a useful part of a fat-loss phase, though its direct effect is modest. A review of 30 randomised trials found that, across everyone studied, yoga's effect on weight, BMI, body fat and waist size was too small to detect, with a BMI reduction among people with overweight or obesity that the authors judged tentative. Yoga adds gentle, sustainable activity while the eating side does most of the work.

Is hot yoga safe during pregnancy?

The American College of Obstetricians and Gynecologists advises avoiding hot yoga during pregnancy because it may cause overheating. ACOG does list modified yoga as a suitable activity, avoiding poses that keep you still or lying on your back for long periods. Every pregnancy is different, so get individual clearance from your midwife, GP or obstetric care provider first.

Takeaways

  • Most yoga is light-to-moderate in energy cost. Typical styles sit around 2.3 to 4 METs, so ordinary meals cover a class; gels, sports drinks and carb-loading belong to long, hard efforts.
  • Comfort is the main pre-class question. A light stomach suits twists and inversions. If you'd arrive shaky or light-headed, have a small, plain, low-fibre, low-fat snack.
  • Hot yoga changes the fluid maths. Heat raises heart rate and sweat more than energy use. Start hydrated, sip in class, replace afterwards, and aim to keep body-weight loss under about 2%.
  • Drink to thirst, add salt when sweating heavily. Electrolytes help heavy, salty sweaters and back-to-back hot classes. Avoid forcing down far more than you sweat.
  • Know the heat warning signs. Dizziness, headache, nausea or cramps mean stop and cool down. Confusion or collapse is an emergency. Avoid hot yoga in pregnancy.
  • Protein is about daily totals. Balanced meals cover a yoga-only week. With strength training, aim for around 1.4–2.0 g/kg/day in 20–40 g servings.
  • Count yoga's energy modestly. It's a useful, sustainable part of fat loss, and eating does most of the work. Strathlon credits each yoga session conservatively by style and body weight.

If you remember one thing, make it this: yoga asks very little of your fuel tank and quite a lot of your comfort and, in a hot room, your fluid. Eat normally, arrive light enough to fold and invert happily, drink well around hot classes and respect the heat. Strathlon's part is modest and honest: your yoga sessions on your plan, a little more room on those days, and numbers grounded in what yoga actually costs.

References

Numbered sources for the specific figures, effect sizes and named studies above. Where a claim reflects agreed guidance rather than a single trial, the citation is to the position stand or consensus statement of the body concerned, with the country or international remit named. Yoga is fuelled by ordinary eating, so most sources below measure yoga's energy cost and sweat losses or set out hydration, heat-safety and protein consensus. That is the honest shape of the evidence for this activity.

  1. Larson-Meyer DE. A Systematic Review of the Energy Cost and Metabolic Intensity of Yoga. Medicine and Science in Sports and Exercise. 2016;48(8):1558–69. Systematic review of yoga's measured energy cost, the source for the full-session, pose and breathing-exercise MET averages, the light and moderate intensity bands, and sun salutations reaching moderate or vigorous intensity. PubMed 27433961
  2. Herrmann SD, Willis EA, Ainsworth BE, Barreira TV, Hastert M, Kracht CL, et al. 2024 Adult Compendium of Physical Activities: A third update of the energy costs of human activities. Journal of Sport and Health Science. 2024;13(1):6–12. The 2024 Adult Compendium of Physical Activities, the source for the MET values of the main yoga styles, and therefore for how modest yoga's extra fuelling need is. PubMed 38242596 · PMC10818145 full text
  3. Herrmann SD, Willis EA, Ainsworth BE, et al. 2024 Adult Compendium of Physical Activities: Conditioning Exercise codes 02150–02185 (yoga). The online Compendium listing used for the yoga MET values quoted: hatha 2.3, hatha high intensity 8.0, hot 3.0, power 4.0, general 2.3, Surya Namaskar 3.5 and vinyasa 2.7. Adult Compendium: Conditioning Exercise
  4. Hagins M, Moore W, Rundle A. Does practicing hatha yoga satisfy recommendations for intensity of physical activity which improves and maintains health and cardiovascular fitness? BMC Complementary and Alternative Medicine. 2007;7:40. Indirect-calorimetry study of a 56-minute beginner hatha session, the source for its 2.5-MET average and its comparison with slow walking. PubMed 18053143 · PMC2219995 full text
  5. Sherman SA, Rogers RJ, Davis KK, Minster RL, Creasy SA, Mullarkey NC, et al. Energy Expenditure in Vinyasa Yoga Versus Walking. Journal of Physical Activity and Health. 2017;14(8):597–605. Comparison of an hour of vinyasa yoga with brisk and heart-rate-matched walking, the source for vinyasa's 3.6-MET average and for heart rate running ahead of energy use in yoga. PubMed 28422589
  6. Thomas DT, Erdman KA, Burke LM. Position of the Academy of Nutrition and Dietetics, Dietitians of Canada, and the American College of Sports Medicine: Nutrition and Athletic Performance. Journal of the Academy of Nutrition and Dietetics. 2016;116(3):501–528. Joint position of the Academy of Nutrition and Dietetics, Dietitians of Canada and the American College of Sports Medicine, the umbrella source for matching nutrition to training load and personalising it. PubMed 26920240
  7. de Oliveira EP, Burini RC, Jeukendrup A. Gastrointestinal complaints during exercise: prevalence, etiology, and nutritional recommendations. Sports Medicine. 2014;44 Suppl 1:S79–85. Review of gastrointestinal complaints during exercise, the source for fibre, fat, protein and fructose raising the risk of gut symptoms, for body position adding pressure on the abdomen, and for rehearsing nutrition strategies first. PubMed 24791919 · PMC4008808 full text
  8. Boyd CN, Lannan SM, Zuhl MN, Mora-Rodriguez R, Nelson RK. Objective and subjective measures of exercise intensity during thermo-neutral and hot yoga. Applied Physiology, Nutrition, and Metabolism. 2018;43(4):397–402. Randomised crossover study of the same yoga routine in a hot and a thermo-neutral room, the source for heat raising heart rate and perceived effort while oxygen use stayed the same. PubMed 29169011
  9. Pate JL, Buono MJ. The physiological responses to Bikram yoga in novice and experienced practitioners. Alternative Therapies in Health and Medicine. 2014;20(4):12–8. Laboratory measurements during a standardised 90-minute hot yoga class, the source for the sweat rates and the measured energy cost quoted. PubMed 25141359
  10. Barnes KA, Anderson ML, Stofan JR, Dalrymple KJ, Reimel AJ, Roberts TJ, et al. Normative data for sweating rate, sweat sodium concentration, and sweat sodium loss in athletes: An update and analysis by sport. Journal of Sports Sciences. 2019;37(20):2356–2366. Normative data for sweating rate and sweat sodium in athletes, the source for how widely fluid and sodium losses vary between individuals. PubMed 31230518
  11. Sawka MN, Burke LM, Eichner ER, Maughan RJ, Montain SJ, Stachenfeld NS. American College of Sports Medicine position stand. Exercise and fluid replacement. Medicine and Science in Sports and Exercise. 2007;39(2):377–90. ACSM (United States) position stand on exercise and fluid replacement, the source for the under-2% body-weight-loss guideline, the weigh-before-and-after method and the role of electrolyte drinks. PubMed 17277604
  12. Mace Firebaugh CJ, Eggleston B. Hydration and Hot Yoga: Encouragement, Behaviors, and Outcomes. International Journal of Yoga. 2017;10(2):107–109. Cross-sectional survey of 700 hot yoga participants, the source for drinking before or during class being associated with fewer self-reported dehydration symptoms. PubMed 28546683 · PMC5433110 full text
  13. Hew-Butler T, Rosner MH, Fowkes-Godek S, Dugas JP, Hoffman MD, Lewis DP, et al. Statement of the Third International Exercise-Associated Hyponatremia Consensus Development Conference, Carlsbad, California, 2015. Clinical Journal of Sport Medicine. 2015;25(4):303–20. Third International Exercise-Associated Hyponatremia Consensus statement, the source for drinking to thirst and for over-drinking as the main cause of exercise-associated hyponatraemia. PubMed 26102445
  14. Armstrong LE, Casa DJ, Millard-Stafford M, Moran DS, Pyne SW, Roberts WO. American College of Sports Medicine position stand. Exertional heat illness during training and competition. Medicine and Science in Sports and Exercise. 2007;39(3):556–72. ACSM (United States) position stand on exertional heat illness, the source for the heat-illness risk factors (yet to acclimatise, dehydrated, recently ill, certain medications) and for cramps responding to rest, fluid and salt. PubMed 17473783
  15. National Health Service (NHS, United Kingdom). Heat exhaustion and heatstroke. NHS guidance on recognising and managing heat exhaustion and heatstroke, the source for the warning signs, the 30-minute cooling guide and when to call 999. NHS Health A to Z
  16. Roberts WO, Armstrong LE, Sawka MN, Yeargin SW, Heled Y, O'Connor FG. ACSM Expert Consensus Statement on Exertional Heat Illness: Recognition, Management, and Return to Activity. Current Sports Medicine Reports. 2021;20(9):470–484. ACSM (United States) expert consensus on exertional heat illness, the source for stopping activity and rapid whole-body cooling in suspected heatstroke. PubMed 34524191
  17. American College of Obstetricians and Gynecologists (ACOG, United States). Exercise During Pregnancy (FAQ119). ACOG patient guidance listing modified yoga as a suitable activity and hot yoga among the activities to avoid, the source for the pregnancy advice above. ACOG FAQ119
  18. American College of Obstetricians and Gynecologists (ACOG, United States). Physical Activity and Exercise During Pregnancy and the Postpartum Period: ACOG Committee Opinion, Number 804. Obstetrics and Gynecology. 2020;135(4):e178–e188. ACOG Committee Opinion 804 on physical activity in pregnancy, the source for avoiding high heat and humidity when exercising while pregnant. PubMed 32217980 · ACOG Committee Opinion 804
  19. Jäger R, Kerksick CM, Campbell BI, Cribb PJ, Wells SD, Skwiat TM, et al. International Society of Sports Nutrition Position Stand: protein and exercise. Journal of the International Society of Sports Nutrition. 2017;14:20. International Society of Sports Nutrition (ISSN, United States) position stand on protein and exercise, the source for the 1.4–2.0 g/kg/day range, the 20–40 g serving size and the long-lasting effect of exercise on muscle protein synthesis. PubMed 28642676 · PMC5477153 full text
  20. Kerksick CM, Arent S, Schoenfeld BJ, Stout JR, Campbell B, Wilborn CD, et al. International society of sports nutrition position stand: nutrient timing. Journal of the International Society of Sports Nutrition. 2017;14:33. ISSN position stand on nutrient timing, the source for protein feeds every three to four hours and for rapid refuelling being needed only when hard training follows within about four hours. PubMed 28919842 · PMC5596471 full text
  21. Morton RW, Murphy KT, McKellar SR, Schoenfeld BJ, Henselmans M, Helms E, et al. A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength in healthy adults. British Journal of Sports Medicine. 2018;52(6):376–384. Meta-analysis of protein supplementation with resistance training, the source for lean-mass gains plateauing at about 1.6 g/kg/day. PubMed 28698222 · PMC5867436 full text
  22. Dysart A, Harden SM. Effects of Temperature and Tempo: Evaluating How Much Time in a Typical Community-Based Yoga Class Is Moderate-Intensity Aerobic Activity. International Journal of Environmental Research and Public Health. 2023;20(3):2349. Heart-rate study of community-style yoga classes at different tempos and temperatures, the source for about a third of class time reaching moderate intensity. PubMed 36767717 · PMC9915918 full text
  23. Lauche R, Langhorst J, Lee MS, Dobos G, Cramer H. A systematic review and meta-analysis on the effects of yoga on weight-related outcomes. Preventive Medicine. 2016;87:213–232. Systematic review and meta-analysis of 30 randomised trials of yoga and weight-related outcomes, the source for yoga's modest effect on weight and BMI. PubMed 27058944

This is general educational information. For medical, dietary or coaching advice, speak to a qualified professional. The figures here are drawn from published research and established consensus and framed as population-level guides: individual needs vary with body size, style and pace of practice, room temperature, heat tolerance and health status, and are best personalised with a qualified professional. Anyone with a health condition, who is pregnant or postpartum, or who has a heart or other medical condition and plans to practise in a heated room, should consult a physician or registered dietitian before making changes. See our Terms for more.

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