Stand with your feet hip-width apart, and extend your arms straight out in front of you. Bend your knees and sit back until your legs are bent 45 to 90 degrees; make sure to keep your knees from extending over your toes. (A) Press back to a standing position as you rotate your torso and outstretched arms to the right. (B) Rotate back to the center and immediately perform another squat, this time rotating to the left as you stand. Both sides makes one rep. The sequence is this: Squat, stand—while simultaneously twisting to the side—then twist back to the center. 10 to 12 reps
To make the move more challenging, hold a medicine ball.