AvatarLeffThe 3 Best Fat-Blasting Exercises You Aren't DoingMen's Health - Jill FanslauUse the moves to torch your gut The key to turning your body into a fat-burning machine isn't more time in the gym—it's enlisting more muscles. “The more muscles you work, the more calories you burn,” says B.J. Gaddour, C.S.C.S., owner of StreamFit.com. Instead of splitting up your workouts by …