Do I need protein shakes or supplements to get results from exercise?

No. Most people meet their protein and nutrient needs through everyday food; supplements are optional convenience items, not essential. Focus on a balanced diet first.

What should I eat before and after a workout?

Generally a carbohydrate-based meal or snack a few hours before, and a mix of carbohydrate, protein and fluids afterwards for harder or longer sessions. For light sessions, normal meals and water are usually enough — total daily intake matters more than exact timing.

How much should I drink when exercising in Singapore’s heat?

Drink to stay just ahead of thirst, use urine colour as a rough guide, and replace electrolytes for long, heavy-sweat sessions. Watch for heat-illness signs; heat stroke with confusion or collapse is a 995 emergency.

Are pre-workouts and performance supplements safe?

Many are unnecessary or unproven, and some products have been found contaminated with banned or harmful substances. If you choose to use any, pick batch-tested products and get professional advice first.

Can eating too little affect my training?

Yes — persistent under-fuelling causes low energy availability and RED-S, which can harm bones, hormones, immunity, periods and performance. Eating enough to support your activity is essential; see a dietitian or doctor if you notice fatigue, frequent injuries, illness or missed periods.

Sports Nutrition in Singapore: Fuel, Protein & Hydration

Written & reviewed by the BestDoctors.sg editorial team · Last updated 25 Aug 2026 · General information, not medical advice

Sports nutrition means eating and drinking to support physical activity — and for most people it is simply normal healthy eating, adjusted in amount and timing to match how much they train, rather than a special or extreme diet. The foundation is the same balanced plate everyone is advised to eat; the “sports” part is mainly getting enough total energy, enough carbohydrate around harder sessions, adequate protein spread through the day, and good hydration — the last especially important in Singapore’s heat and humidity.

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In a medical emergency, or for severe or sudden symptoms such as breathing difficulty, chest pain, fainting or stroke signs, call 995 immediately.

Most people do not need supplements or protein shakes. Drink to stay just ahead of thirst; heat stroke (confusion, collapse, hot skin) is a 995 emergency. Under-fuelling is a real risk, not a virtue. See a doctor or accredited dietitian if you have a health condition or signs of under-fuelling.

What it is and who it is for

Sports nutrition applies to everyone who exercises, from beginners to serious athletes, and for recreational exercisers it rarely needs anything beyond a normal balanced diet with attention to fluids. Fuelling adequately brings better energy and endurance, better strength and skill, quicker recovery, fewer “hitting the wall” episodes, a lower risk of injury and illness, and better long-term consistency. Eating too little for your training load undermines all of that.

The roles of the macronutrients

Carbohydrates are the main fuel: muscles store them as glycogen, the primary fuel for moderate-to-hard and longer exercise, so more or harder training generally means more carbohydrate — from wholegrains, rice, noodles, bread, oats, potatoes, fruit and legumes. Protein supports muscle repair and adaptation and is best spread across meals rather than loaded into one. Fat is essential too, providing energy for lower-intensity activity and fat-soluble vitamins, with an emphasis on unsaturated sources such as nuts, seeds, oily fish and olive or canola oil. Fluids and electrolytes round out the picture.

Timing: before, during and after

A familiar carbohydrate-based meal or snack a few hours before exercise helps top up fuel — and it is wise never to try new foods before an event. During short or easy sessions, water is usually enough; for prolonged or intense exercise, some carbohydrate and fluid can help maintain performance. Afterwards, a mix of carbohydrate to refill glycogen, protein to support repair, and fluids aids recovery. The idea of a “recovery window” is useful, but for people who train once a day and eat regular meals, total daily intake matters more than precise minute-by-minute timing.

Hydration in Singapore’s heat

Singapore’s hot, humid climate means higher sweat losses and greater dehydration and heat-illness risk, even for recreational exercisers. A simple principle is to drink to stay just ahead of thirst — enough to avoid dehydration but not so much as to over-drink — using urine colour (pale is generally well hydrated) as a rough guide. Sodium is the main electrolyte lost in sweat, and for typical short sessions plain water plus normal meals replaces it; for prolonged, heavy-sweat exercise in the heat, some electrolyte replacement may help. Importantly, over-drinking plain water during long events can be dangerous (low blood sodium), so drinking to thirst is safer than forcing large volumes.

The truth about protein and supplements

Most people — including many recreational and even serious exercisers — can meet their protein needs through ordinary food, so protein supplements are optional, not essential. Many popular pre-workout and “performance” products are unnecessary or have weak evidence, and a good diet is not something a supplement can replace. There is also a genuine safety point: anti-doping bodies such as UK Anti-Doping warn that no supplement can be guaranteed free of prohibited or harmful substances, and some have been found contaminated. Anyone who chooses to use supplements is advised to pick batch-tested products and seek professional advice first — this guide names no products and gives no doses.

Under-fuelling and RED-S

Under-fuelling is a real risk, not a virtue. When energy intake is persistently too low for training demands, the body enters a state of low energy availability that can lead to RED-S (relative energy deficiency in sport), described in the IOC consensus statement on the topic. RED-S can affect hormones, bones (with stress fractures or low bone density), menstrual cycles, immunity, mood and performance, in both women and men. Warning signs include unexplained fatigue, frequent injuries or stress fractures, recurrent illness, loss of periods and poor recovery, and they warrant professional help. The healthiest mindset is to eat enough to support activity, not to restrict.

Getting it right in Singapore

Build meals on HPB’s My Healthy Plate — a quarter wholegrains, a quarter protein, half fruit and vegetables — and scale portions up on heavier training days. Easy local options that combine carbohydrate and protein include rice or noodle dishes with lean meat, fish, tofu or egg, wholemeal bread, oats, bananas, yoghurt and milk or soy milk, and recovery can be everyday food rather than special products. Hydrate deliberately in the heat, be cautious with midday outdoor sessions, and choose water over sugary drinks (the Nutri-Grade label helps identify high-sugar beverages). Anyone with a medical condition, pregnancy, an eating-disorder history, or signs of under-fuelling should see a doctor or an accredited dietitian for individual advice.

Related nutrition & healthy-eating topics

Sources

British Dietetic Association — Sport and exercise nutrition: bda.uk.com
HealthHub — My Healthy Plate: healthhub.sg
UK Anti-Doping — Supplements: ukad.org.uk

General information only. This guide is general nutrition information and is not personalised dietary or medical advice. Individual needs vary with age, health conditions, medicines and pregnancy, so speak to a doctor or an accredited dietitian before making major dietary changes — especially if you have diabetes, kidney disease, are pregnant, or take medicines that interact with food. Seek medical advice for unexplained weight loss, difficulty swallowing, or a sudden change in appetite, and call 995 for a medical emergency such as choking or a severe allergic reaction (swelling of the face or throat, difficulty breathing).