There are three electrolytes found in a human body. These are potassium, chloride, and sodium. Being an electrolyte, sodium is highly essential for sound health and survival. It serves many vital functions in your body. To mention a few, it controls the entry and exit of fluids in body cells. It regulates blood pressure, blood volume, nerve impulses, muscle contraction, and acid base balance of blood, and other fluids of the body.