"An adult human is made up of around 60% water. We have water in our brains. We have water in our skin. We have water in our kidneys. And, according to the H.H. Mitchell, Journal of Biological Chemistry, even our lungs are made up of water--83% water, to be exact. Obviously, that water is in the tissue, and not actually inside our lungs. The point we're trying to make is that water is essential to…"