Top performing athletes know that nutrition is king when it comes to gaining an edge over their competitors. However, no matter what your goal is—carving out your six-pack, increasing your stamina—the gateway to success lies on your plate.

An athlete’s diet is more than just calories in and calories out—it’s fuel. The right foods increase your energy, promote muscle growth, and aid in muscle repair.

The wrong ones set you back. When it comes to chowing down, these are the foods a serious athlete won’t touch.