Stand with your feet hip-width apart and hold a stability ball in between your hands above your head. Keeping the ball overhead, begin to squat down as if you're sitting in a chair with your heels grounded. Be sure to keep your knees tracking over your toes but don't let them pass your shoelaces.
Do this exercise with the best exercise equipment. We recommend using a bluetooth chest strap heart rate monitor or a smartwatch for more training optimization & performance tracking.