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Pourquoi faut-il s’hydrater après le sport ?

Why should you hydrate after sport?

Hydrating your body after exercise is an often underestimated but essential element of sports recovery . Although we are generally aware of the importance of hydration, understanding why and how to hydrate effectively after exercise is essential for all athletes and fitness enthusiasts.

The importance of hydration

Post-exercise hydration is of paramount importance, due to various essential physiological functions. First, water is essential for the muscle recovery process. After exercise , muscles need water to help repair and rebuild damaged muscle fibers . Adequate hydration speeds up this repair process and will help reduce post-exercise muscle pain. Additionally, proper hydration helps restore the body's normal fluid balance. During exercise , in addition to water, the body loses a significant amount of essential minerals through sweat. Rehydrating with fluids containing these electrolytes is crucial to maintaining proper functioning of the nervous system as well as the body's acid-base balance and osmotic pressure.

Also, hydration plays a role in regulating body temperature. Sports effort can increase the internal temperature of the body, while perspiration helps to cool it. After exercise, continuing to drink water helps stabilize body temperature and support the body's normal thermoregulatory processes. Finally, good hydration promotes kidney function and helps eliminate waste and toxins produced during physical exercise. This can include ammonia and lactic acid, the accumulation of which can contribute to fatigue and reduce athletic performance. By drinking enough after exercise, athletes help their bodies eliminate these metabolic byproducts more efficiently.

It is crucial to adapt your hydration during exercise according to the feeling of thirst, also taking into account the intensity of the exercise and environmental conditions. Staying energetically hydrated makes it easier to withstand exercise and optimize physical performance .

The risks of dehydration after sport

Not drinking enough after a workout is like ignoring a warning light on your car's dashboard. The consequences can be serious. Knowing that your water needs are increased, without adequate rehydration, your body cannot recover properly. In fact, the muscles remain tense and muscle pain intensifies. You also risk disrupting your body's electrolyte balance, which is essential for the functioning of your nerves and muscles. Water loss can also slow down your ability to regulate your body temperature, increasing your risk of overheating and heat stroke.

Additionally, without enough fluids to flush out toxins, like lactic acid, you may feel more tired and perform less well during your next workout. In short, not hydrating yourself properly after sport compromises your recovery , your performance and even your long-term health.

Practical tips for determining how much water to drink after exercise

To effectively meet your hydration needs after sport, it is essential to adopt a personalized and practical approach. Although scientific guidelines recommend replenishing approximately 1.5 liters of water for every kilogram of weight lost during exercise, this method can be difficult to implement on a daily basis... So here are some more accessible tips:

- Listen to your body : Start by drinking small amounts of water or electrolyte drinks immediately after exercise. Then continue to hydrate regularly for the next few hours. Your thirst is a good indicator, but don't wait until you're thirsty to drink.

- Use urine color as an indicator : Light-colored urine is a good sign of adequate hydration, while dark urine can indicate dehydration.

- Include water-rich foods : Foods like fresh fruits and vegetables can also help with rehydration. Including these foods in your post-exercise meal is a great way to replenish fluids.

- Favor drinks with electrolytes for intensive training : If your exercise session was particularly intense or took place in a hot environment, opt for drinks enriched with electrolytes such as the Hydratis solution to better compensate for the loss of salts minerals.

How to hydrate properly after sport? A simple explanation

Imagine that you have just finished an intense cycling session. You sweated and lost a lot of water, salt (sodium). Now it's time to rehydrate , that is, put water and salts back into your body. But what is the best way to do it? A scientific study examined three ways to rehydrate after sport: by drinking water , by taking a sports drink or even an oral rehydration solution . Oral rehydration solution was found to be the most effective . For what ? Because it contains more sodium . Sodium is very important because it is what you lose the most through sweating. And to properly rehydrate, you not only need to replace water, but also lost sodium. Oral rehydration solution does this very well because it has a high sodium concentration.

When you have a drink high in sodium, it helps you in several ways:

-makes you want to drink more , so you rehydrate better.

-helps maintain the right amount of fluid in your blood and around your cells.

- reduces the amount of urine produced, so you keep more fluid in your body.

- prevents the drop in sodium levels in your blood.

And guess what? Hydratis offers just these oral rehydration solutions! By choosing these drinks, you ensure that you rehydrate effectively after sport.

The Hydratis solution

The importance of hydration after sport is undeniable. It is essential for recovery, injury prevention and maintaining sports performance. It is important to choose drinks that not only restore fluid balance , but also provide necessary electrolytes . This electrolyte concentration promotes optimal fluid retention, helping to maintain adequate cellular hydration and prevent dehydration. Hydratis will not only provide a hydration solution that meets these needs, helping you stay ready for your next sporting challenge.

By choosing Hydratis , athletes can benefit from faster recovery, reduced risk of injuries related to dehydration and preservation of their sports performance. This hydration solution adapted to specific needs after exercise helps to keep athletes in top shape and performance ;)

As a reminder, we usually recommend putting 2 Hydratis lozenges in your 500 mL bottle, repeating as many times as necessary (you can take up to 5 Hydratis lozenges per day ).

In summary, post-exercise hydration is essential for recovery and athletic performance. By restoring fluid balance, helping with muscle repair and regulating body temperature, it plays a crucial role. Simple practices such as listening to the body, monitoring urine color, and choosing electrolyte-rich drinks are recommended for effective hydration. By opting for solutions like Hydratis, athletes can optimize their recovery and maintain their physical fitness to face their next sporting challenges with confidence.


PubMed.15/12/2020. “Efficacy of Ingesting an Oral Rehydration Solution after Exercise on Fluid Balance and Endurance Performance”. retrieved from:

Sports nutrition, 3rd edition by X.Bigard and N.Koulmann. 2017. “Hydration and sports” Chapter 5 Sciences and the Future.07/20/2016. “Sport: the importance of hydration for performance”. retrieved from:

PharmaGDD.06/27/2023. “Athletes: how to hydrate well” retrieved from:

Lightinfitness.01/29/2023. “How much water per day when training”. retrieved from:

Sdpo-mag. “Dehydration in sport by Amandine Le Cornec”. retrieved from:,elle% 20may%20be%C3%A9re%20deadly%2 0!