Why Plain Water May Fall Short for Rehydration After Heavy Sweat

After heavy sweating, plain water doesn't fully replace what your body loses because sweat carries away sodium, potassium and other electrolytes that are necessary for proper hydration, muscle function and recovery In a study of firefighters recovering from extreme heat exposure, carbohydrate-electrolyte drinks restored hydration more effectively than water alone, even though all participants drank the same amount of fluid People who consumed electrolyte-containing drinks remained less thirsty, retained more fluid and cleared exercise-related lactate faster, helping their bodies recover more efficiently after strenuous activity Hydration isn't just about how much you drink; paying attention to thirst, urine color and urination frequency provides a more accurate picture of your body's fluid needs than following a fixed water-intake rule Foods and beverages that provide both fluids and minerals, such as fruit, coconut water, cooked vegetables and electrolyte-enhanced drinks, support hydration better than plain water after significant sweat loss