Do sports and energy drinks really work?

Us teenagers are rapidly becoming the top consumers of energy drinks. Over 500 new brands were brought to the shelves this year. They are giving us a wide variety of styles , flavors and sizes to choose from. Although commonly marketed to be like sports drinks, which restore some important nutrients lost during exercise, energy drinks have little proven nutritional value

So do sports drinks supply the benefits that they claim? Culinologits Mark Crowell talks about if they do or if some can counteract the exercise benefit: