Gatorade Thirst Quencher contains sodium and potassium electrolytes. This is because sweat contains more than just water - when athletes sweat, they also lose electrolytes such as sodium and potassium. Unlike other beverages that are not scientifically formulated with the recommended amount of electrolytes for the active occasion, Gatorade is lab-tested to ensure it helps replenish the electrolytes lost in sweat while maintaining thirst so athletes will adequately ingest enough fluid and electrolytes to stay well-hydrated.