MB Diagonal Circles
Stand back-to-back with your partner, about 12 - 18 inches apart.
Begin the movement by turning to your right, holding the ball with straight arms at knee height. Your partner will turn to their left and grab the ball, taking it across their body, up to their shoulder height, where you will grab the ball off them to initiate the movement again.
Work in a slow controlled manner, taking the ball in a diagonal oval shaped movement around both partners.
Change direction every 5 - 10 turns, aiming to allow your pelvis to turn naturally, however concentrate on working your core rotational muscles.
Beginner's aim for 5 - 10 turns in each direction.
Intermediates aim for 10 - 20 turns in each direction.
Advanced work for 15 - 30 turns in each direction.