Why do we need so much water?

Question

Do animals even drink or need as much water as we do in order to be healthy?? Why do we need so much?

In: Biology

Answer 1

The short version is that we continually lose water, even when we’re relatively inactive. Every time we exhale, we breathe out a bit of water vapour. We need to excrete some water through our digestive systems to carry toxins out of body. We perspire – even on colder days, we are generating sweat. Also, our metabolisms use water in the various processes associated with food digestion.