You've heard it before and by now you know it to be true: your body is a machine. Given the right food, it allows you to crush tough WODs, long runs, and whatever else it's subjected to. Eat the wrong stuff, and you’ll simply run out of gas—or end up with a bad case of the bloating and flatulence variety. Avoid these foods when you're in training mode if you want to keep going and going and going...