Almost everyone drinks water as it is necessary for life. Infact, in accordance with H.H. Mitchell, Journal of Biological Chemistry, 60% of human body is made up of water. Therefore, according to body needs, sometimes we find ourselves drinking water too often.
Water in the animal body performs a number of functions: as a solvent for transportation of nutrients; as a medium for excretion; a means for heat control; as a lubricant for joints; and for shock absorption. While the 8 glass rule daily water intake is what is expected of us, the answer to exactly how much water one should drink is not that simple. Well according to H. H Mitchell, Journal of Biological Chemistry 158, The brain and the heart are composed of 78% water. Lungs are about 83% water, Skin 64% water