Water is an indispensable nutrient for all our vital processes. It makes up 60 to 70% of our body weight, and we lose more than 2 liters (or 2 kilos) per day, only in order to ensure our basal metabolism.
The food that we eat, especially fruits and vegetables, takes care of 1/5 of all our needs. The remaining 4/5 must therefore be directly drunk in the form of liquid.
Remember to drink at least 8 glasses of liquid a day.