Water is the primary component of all the bodily fluids- blood, lymph, digestive juices, urine, tears, and sweat. Water is involved in almost every bodily function: circulation, digestion, absorption, and elimination of wastes, to name a few. Water carries the electrolytes, mineral salts that help convey electrical currents in the body; the major minerals that make up these salts are calcium, chloride, magnesium, potassium, and sodium.