See our bodies will retain water. As our bodies hold onto that water toxins can set in. We normally sweat out any extra water that our bodies retain and it will hold to that water unless we drink extra. Water added with soluble fiber will line our intestinal tracts and make food easier to slip through Water is the key to good digestion along with soluble fiber. I have read as much as possible about what water can do for the body. All I drink anymore is water and tea.