If you don’t hydrate while exercising, your performance will decline and you will feel discomfort. The symptoms of dehydration can be felt when the amount of water you lose is equal to one percent of your body weight.

If you don’t hydrate while exercising, your performance will decline and you will feel discomfort. The symptoms of dehydration can be felt when the amount of water you lose is equal to one percent of your body weight. For example, an adult weighing 70 kilograms will feel fatigued and lose focus when his body loses 700 millilitres of water