We get it: You've tried every diet trick in the book to get lean while maintaining your muscle mass. Carb backloading, carb cycling, ketogenic diets, paleo diets—you've done it all.

So by now, you probably know that each dietary approach has its pros and cons. But as you hone your diet to create your fittest, leanest body yet, you should know all the factors—including your gym training—that contribute to real fat burning. Flip through this gallery to learn the fundamental strategies that will speed up your shred.