A long tennis match can turn on more than your serve or footwork. If your energy fades late in a set, taking in carbohydrates during play may help you keep moving sharply and stay focused. The right plan depends on match length, intensity, weather and what your stomach can handle.
For most players, water is enough during a short hit. In a hard match lasting more than about an hour, small, regular amounts of carbohydrate can be useful. Here’s how to choose a practical target and fit it around tennis’s short breaks.
Why carbohydrates matter during tennis
Tennis combines quick bursts of movement with periods of lower effort and rest. Your body uses carbohydrate to fuel much of that high-intensity work, drawing on glucose in your blood and stored carbohydrate in your muscles. Those stores are limited. During a long, demanding match, they can run low, making it harder to repeat sprints, recover between points and maintain concentration.
Carbohydrate during play does not guarantee a win or prevent every late-match slump. It can, however, help provide fuel as the match goes on. That may matter when a close second set becomes a third, or when hot conditions make a long rally feel more costly.
How much carbohydrate should you take?
A useful general range for exercise lasting about one to two and a half hours is 30–60 grams of carbohydrate per hour. You may not need the top of that range for every match. For a hard match lasting less than an hour, many players can get by without eating during play, especially if they had a suitable meal beforehand.
For events lasting longer than about two and a half hours, endurance guidance sometimes allows up to 90 grams per hour. That is not a default tennis target: it takes practice, and the higher rate may not suit your stomach or the stop-start rhythm of a match. Most recreational players should start lower and see how they feel in training.
| Match or session | Practical approach |
|---|---|
| Under 60 minutes | Water is usually enough; focus on eating well beforehand. |
| About 60–150 minutes | Consider 30–60 g of carbohydrate per hour during hard play. |
| More than 150 minutes | Plan regular fuel; try higher amounts only if practiced and well tolerated. |
These are starting points, not strict rules. A player who has eaten recently and is playing at a moderate pace may need less than someone who started hungry and is fighting through a hot, three-set match.
What can you eat or drink during a match?
Choose familiar foods and drinks that are easy to take in quickly. Check the label, because serving sizes and carbohydrate amounts vary by product.
- Sports drink: A convenient way to take in fluid and carbohydrate at the same time. A 500 ml bottle often contains around 25–35 g, but check the label.
- Banana: A small or medium banana typically provides about 20–30 g of carbohydrate. It can be easy to eat during a longer break.
- Energy gel: Many provide roughly 20–30 g. Take one with water if the instructions recommend it; a concentrated gel may feel unpleasant without enough fluid.
- Chews or soft bars: These can work during extended breaks, but avoid anything dry, crumbly or difficult to chew quickly.
There is no need to force down a large snack at one changeover. Small, repeated portions are often easier. For example, a player aiming for around 30 g per hour might sip a sports drink across several breaks, rather than trying to swallow the whole amount at once.
Timing carbohydrate around tennis breaks
Because you cannot fuel during a rally, plan to eat or drink during permitted breaks, such as changeovers or a break between sets, and follow the event’s rules. Take a few sips at regular opportunities instead of waiting until you feel exhausted or very thirsty. A large amount at once can cause stomach discomfort and leave you feeling heavy.
Think about a match that is still level late in the second set. If you have taken a few sips of sports drink at earlier breaks, you have been adding fuel steadily. If you wait until your legs feel flat, you may have fewer chances to catch up comfortably. This is especially relevant in warm weather, when managing fluid matters too.
Carbohydrate and hydration are related, but they are not the same thing. A sports drink can supply both; a gel or banana supplies carbohydrate but little fluid. Drink according to thirst and the conditions, and consider a drink with sodium during prolonged, sweaty play. Avoid drinking so much that you feel bloated.
Test your plan before match day
Your gut also needs practice. Try your intended drink or snack during a training session or practice match, especially if you are planning to use gels or a higher carbohydrate intake. Start with a small amount and note how you feel. If you get cramps, nausea or a sloshing sensation, reduce the amount, slow your intake or try a different option.
It helps to arrive fueled rather than trying to make up for missed meals on court. Before a match, many players do well with a familiar meal or snack that includes carbohydrate and is not too heavy. Then use during-match fuel to support a long effort, not as a replacement for eating beforehand.
Players with diabetes, food allergies, or medical conditions that affect eating, drinking or blood sugar should get personal advice from a qualified health professional. Young players may also need guidance suited to their age and training load.
Frequently Asked Questions
Do I need carbohydrates during every tennis match?
No. For a short session or match under about an hour, water is usually enough for most players. Carbohydrate becomes more useful as hard play lasts longer, particularly beyond 60–90 minutes.
Can I use a sports drink instead of water?
Yes, if you want both fluid and carbohydrate and the drink sits well with you. Check the label for the amount of carbohydrate per bottle. You can also use water for hydration and get carbohydrate from food or a gel.
Should I eat at every changeover?
Not necessarily. Use breaks to sip or take a small portion as needed, and follow competition rules. Regular, modest intake is often more comfortable than eating a lot at one time.
What if eating during a match upsets my stomach?
Try a smaller amount, take it more slowly, or test another familiar option during practice. Don’t introduce a new gel or drink for the first time in an important match.
Final Thoughts
For long, hard tennis, carbohydrate during play can help support energy and focus. A practical starting point is 30–60 g per hour once play extends beyond roughly an hour, using small portions of a drink or easy-to-eat food during breaks. Keep the plan simple, account for heat and match length, and practice it before relying on it in competition.
