Squats are probably one of the best booty shaping moves you can do (Solo incorporates lots of squat variations into her Olympics training), and this squat walk combo helps keep your heart rate (and your tush) elevated.
To do: Start standing with your feet hip width apart, arms crossed over your chest. Lower into a squat by bending both knees, tracking them over -- but not past -- your toes and pushing your hips behind you (as if you were about to sit down on a chair). Keep your back straight, chest lifted and eyes straight ahead.
Staying low in your squat position, take a step forward with your left foot, keeping left knee bent as you step and staying low to the ground. Wuickly take a step forward with your right foot, landing into your basic squat stance.
Next, step backwards with your left foot, still staying low in your squat position, and then step back with your right, landing back into your basic squat stance.
Try to repeat four times in a row (walking forward and back) without coming out of your squat position.