While guys spend a lot of time working their abs, they don't pay as much attention to their backside. And that's a problem because one of your body's largest and most powerful muscle groups resides there: your glutes. So BJ Gaddour, C.S.C.S., creator ofthe Bodyweight Muscle Burners DVD, combined one of your favorite core moves—the sit-up—with one of the best butt-building moves—the hip-up—to hit your front and backside in one go.
"The sit-up to hip-up is the ultimate ab-and-glute-carving exercise," says Gaddour. Plus, transitioning between the two moves calls into play a lot more muscles than just doing each move separately. This will ramp up your heart rate and make you break a sweat faster, he says. Ready to try it? Watch the video to learn how to perform the sit-up to hip-up with perfect form.