But it is important to remember that proper hydration should be maintained before, during and after any period of physical exertion, and experts say that water is the best option. One hour later, drink at least one 8-oz. After an activity, drink at least two more 8-oz. Next to oxygen, water is the most important nutrient that the body needs to function. The adult body is made up of approximately 70 percent water.
Water plays a vital role in nearly every function of the body.
When planning outdoor activities, be sure to pack a bag filled with snacks, sunscreen, a hat and plenty of cool water.