Electrolytes (sodium,potassium,and chloride) are present in the human body and the balancing act of the electrolytes in our bodies is essential for normal function of our cells and organs. There has to be a balance. Sodium is the major positive ion (cation) outside of cells and is also regulated by the kidneys and adrenal glands. Potassium is important for the proper functioning of the nerves and muscles, particularly the heartbeat. Chloride helps the body maintain its normal balance of fluids.