Electrolytes in Drinks

Electrolytes are minerals such as sodium and potassium that carry electrical charges in the body. They help nerves send signals and keep fluids balanced inside your cells. You lose electrolytes when you sweat, so they are important during long hard exercise.

Sodium is found in table salt, and potassium is found in bananas and many vegetables. For most people, eating a balanced diet provides enough electrolytes, so sports drinks are only needed after long exercise.