But are they worth the extra money? We tested six of the best-selling isotonic sports drinks and then asked sports dietician Jeanette Crosland of the Sports Nutrition Foundation to give her verdict ...

To learn more, we spoke with three experts to get the real truth on when you should and shouldn't hydrate with sports drinks, as well as how to choose the best sports drinks for your health.

And unfortunately, when you give your child a sports drink, that sugar can be empty calories, because you're not getting a lot of vitamins the nutrients with it. The best drink to give your child ...