Although water does not give us energy it is the most important nutrient. We may be able to live on without the others for weeks, but we cannot go on without water for more than a few days.
Water has many functions in our body. It helps break down food. It also cools the body down when it becomes too hot. The body carries away waste products in a watery solution.
Our body needs about 2 –3 litres of water a day. We get it from the water and liquids we drink but also from fruits, vegetables and other food.