1. Squat Jumps
Works: thighs, butt, hips
A. Stand with feet hip width apart, toes facing forward. Bend legs until thighs are almost parallel to the floor. At the same time, reach your arms in front of you at chest level. Lean forward slightly, keeping back straight and knees aligned over ankles as you push your butt behind you.
B. Jump out of the squat position so your feet lift off the floor, while pulling your arms behind you with elbows bent close to your sides.
C. Return to starting position; repeat 12 to 15 times.
Make it easier: Do squats without jumps.