HOW: Begin in a standing position while holding a long towel. Raise your arms fully overhead at the same time shift your weight to one leg while you bend the opposite leg’s knee up. All in one motion, slam the towel down in front of you as you kick your back and hinge forward at the waist. Return to the starting position repeat for the prescribed amount of reps.
FEEL: You should feel the muscles in the balancing leg working. You should also feel your core and arm muscles working when you slam the ball.
COMPENSATION: Don’t slouch your back, keep it upright even as you lean forward to slam the ball.