Every cell in our bodies needs the right balance of water inside it to keep its shape, produce energy, get rid of wastes, and perform the functions that keep us healthy. There are many processes happening throughout the body that depend on water at any given moment: food is digested as a watery slurry in the intestines, kidney cells are excreting waste into the watery filtrate that will become urine, lacrimal glands behind the eyebrows are secreting tears, which clean and moisturize eyeballs with each blink. Water is commonly referred to as a universal solvent, and a solvent is defined as:
