You can target all the muscles that make up your bum and your legs—your glutes, quads, hamstrings, hips, inner thighs, calves—in this four-exercise workout. Basically, if you don't want a super-tight butt and hella-toned legs, stop reading now. Yeah, we figured you'd keep going. Familiarize yourself with the moves in the video and pin-able graphic below, then click here for step-by-step instructions for each exercise. Happy sculpting!