10 WORST Fitness Mistakes
Drinking sports drinks instead of water -- Sports drinks contain electrolytes. They also contain sugar, and not the good kind. Most sports drinks contain corn syrup, which sends your liver into overdrive to process the high sugar concentration, storing anything else taken in as fat. Check the labels of sports drinks to avoid the extras that you don't need, and only drink sports drinks when you need them -- they're not meant to quench your everyday thirst.
Unless your workout is intense -- and we're talking marathon-intense -- you probably don't need a sports drink. If you need some flavor, try a spritz of lemon or lime. There are concentrated, sugar-free flavors available in packets and syrups that add flavor but no calories to your drink. Give them a try.