Target Muscles: gluteus maximus, quadriceps
Set up: Begin in a squat position, feet wider than hip-width apart and hands on hips. Don't allow the knee to extend past the toes [A].
Action: Jump in the air with your toes pointing out [B]. Land into the squat, knees at a 90-degree angle, and squeeze your butt tight. Do four sets of 15 reps.