In physiology, body water is the water content of an animal body contained in its tissues, blood, bones, and elsewhere. The percentages of body water contained in various fluid compartments add up to total body water (TBW). This water makes up a significant fraction of the human body, both by weight and by volume. Ensuring the right amount of body water is part of fluid balance, an aspect of homeostasis.
== Location ==
By weight, the average adult human is approximately 60% water, and the average child is approximately 65% water. There can be considerable variation in body water percentage based...