2/ WHAT ARE THE RISKS OF DEHYDRATION
When you do intense and/or prolonged physical activity, you sweat and risk dehydration.The body loses an average of 1.5 litres of sweat an hour and this can go up to 3 - 4 litres per hour or more if it's hot, even more if it's hot and humid! Then, there is a real risk of dehydration, which can not only impair your performance but also cause injury. On average, it is estimated that a person who loses 1% of their weight loses 10% of their physical capacity and a person who loses 2% of their weight loses 20% of their physical capacity. The conclusion is clear.
It is therefore essential to provide your body with a regular water intake without waiting to feel thirsty first. The feeling of thirst arrives too late and if you wait, by the time water gets into the blood, you will already be in a state of dehydration. Hence the importance of drinking regularly throughout the day, before and during exercise.