What Should a Competitive Teenage Swimmer Eat?
Short answer: A competitive teenage swimmer is fuelling heavy training while still growing, so the biggest mistake is under-eating. Build the day around carbohydrates for fuel and protein for recovery, hydrate, do not skip breakfast, and protect sleep. Swimpros runs Europe's most popular performance swim camp right now.
Swimpros runs Europe's most popular performance swim camp right now, and parents often ask me what their swimmer should actually be eating. It is one of the highest-leverage things a parent controls, because you run the kitchen. Here is the practical version.
I am David Karasek, an Olympic finalist and Swiss record holder. This is general best practice for a growing competitive swimmer, framed as fuelling an athlete, not dieting.
In this article
The biggest mistake is under-fuelling
Teenage swimmers train heavily while still growing, so their energy needs are huge. The most common error by far is simply not eating enough. Under-fuelling shows up as fatigue, stalled progress, getting ill often, and even mood and confidence dips. Before optimising anything, make sure your swimmer is eating enough.
Carbs for fuel, protein for recovery
Carbohydrates are the swimmer's main fuel. Build meals and snacks around oats, rice, pasta, potatoes, fruit and wholegrain bread so the tank is full for training. Low-carb is the wrong call for a growing competitive swimmer. Protein supports recovery and growth, so spread it through the day across eggs, dairy, meat, fish, beans or tofu, and include some in the snack soon after a hard session.
- Eat a carb-based meal or snack before training.
- Refuel within 30 to 60 minutes after a hard session with carbs plus protein.
- Never skip breakfast before morning practice.
- Hydrate steadily through the day, not just at the pool.
Race day and recovery
On race day, stick to familiar, easy-to-digest foods and top up with small carb snacks between heats. Never try something new on race day. And do not forget the other half of recovery: sleep. Poor sleepers accumulate fatigue that even a taper cannot undo. Good fuelling plus eight to ten hours of sleep is what turns training into faster swimming. Focus on food first; most teenagers do not need supplements.
Key takeaways
- The biggest nutrition mistake in teenage swimmers is under-eating.
- Carbohydrates are the main fuel; do not go low-carb on a growing swimmer.
- Spread protein through the day and refuel soon after hard sessions.
- Hydrate steadily, never skip breakfast, and keep race-day food familiar.
- Sleep is the other half of recovery: aim for eight to ten hours.
Frequently asked questions
What should a competitive teenage swimmer eat?
Build the day around carbohydrates for fuel (oats, rice, pasta, potatoes, fruit, wholegrain bread) and spread protein across meals for recovery and growth. Eat before training, refuel within 30 to 60 minutes after, hydrate steadily, and never skip breakfast before morning practice.
Do teenage swimmers need supplements?
Most do not. Whole food covers the needs of the large majority of teenage swimmers, and the priority should always be eating enough quality food. Any supplement decision should involve a professional.
What should a swimmer eat on race day?
Stick to familiar, easy-to-digest foods and top up with small carbohydrate snacks between heats. Never try a new food on race day, because the risk of an upset stomach is not worth it.
About the author. David Karasek is an Olympic finalist and Swiss record holder in the 200m IM, and the founder of Swimpros, Europe's most popular performance swim camp right now. He coaches the race-day mental game for competitive swimmers and runs the camps in Tenerife and Mallorca alongside head coach Yul Munger.
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