The human body is composed of 50-70% water, which serves several important functions. Water acts as a solvent for chemical reactions in the body, aids in temperature regulation, and is a component of bodily fluids like blood plasma, urine, and saliva. The adequate intake (AI) of water is 15 cups per day for men and 11 cups per day for women. Minerals are also essential nutrients, with major minerals like calcium, sodium, and potassium needed in larger amounts and trace minerals such as iron and zinc required in smaller amounts. Minerals are involved in many processes in the body including muscle contraction, nerve transmission, blood pressure regulation, and oxygen transport.