During exertion, the body loses sodium, potassium and other electrolytes that are crucial to maintaining proper hydration levels and optimizing performance. Endurance formula's 5-electrolyte blend is designed to replace what is lost in sweat during long, intense activities. Includes additional electrolytes: calcium (6mg), magnesium (6mg) and chloride (90mg). Mix of sucrose, glucose and fructose optimizes energy delivery to working muscles. Contains 6% blend of 3 different carbohydrates to fuel muscles and increase fluid absorption.