Electrolytes are essential for horses during heavy work outs. Especially during warm weather. Even in hot trailers horses need to keep hydrated. When a horse sweats it loses salts such as sodium, chloride and potassium. This depletion of a horse's natural electrolyte balance can cause muscle stiffness, tiredness and colic symptoms that can be potentially life threatening. Be sure to hydrate your horse before offering electrolytes. Horse Quencher is the perfect way to get your horse to hydrate.