They contain modest amounts of carbohydrates, potassium and soduim which research shows are critical for maintaining stamina during heavy activity and preventing dehydration. Sports beverages are useful for people engaging in moderate to high intensity activity for an hour or more. The 50 to 60 calories per eight ounces of sports beverage safely helps fuel muscles for on-going activity. The sodium, typically 50 to 100 milligrams, stimulates thirst, encouraging us to drink more. Vitamins added to sports beverages provide a selling point, but, according to sports nutritionists, do little to enhance immediate performance.
Many people find that drinking eight glasses of fluids a day is a lofty goal.
Remember that eight glasses is just an estimate - some people need more, others can get by on less. And remember - milk, juices, fruits and vegetables all contribute to that amount. If you don't like the taste of tap water or if you question the safety of your tap water, it's likely you use bottled water. If you drink water from a bottle, refill or replace it often. Before refilling it, clean it in hot, soapy water.