The best foods for athletes aren't always obvious. Sure, athletes of all levels need fuel -- power. But turning to all of those energy gels and drinks could be defeating the purpose of your workout, holding you back, or in worst-case scenarios, shifting your metabolism into a dangerous fat-storing state. We turned to exercise and nutritional experts to identify the obvious (and not-so-obvious) foods to avoid.

Jordan Metzl, MD, sports medicine physician at New York City's Hospital for Special Surgery and author of The Exercise Cure says to avoid:
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