Start with the feet a little wider than hip distance apart. Twist to the left raising the ball over to your left shoulder.
On an exhale pull your abs toward your spine and "chop" the ball down diagonally across your body toward the outside of your right knee. Imagine you're chopping some wood at this angle and the ball is your axe — the move is a bit percussive.
Focus the on the rotation initiating in your torso.
Control the ball back up to the starting position. This completes one rep.
Remember you are moving with force but also control. Don't give into the momentum of swinging the ball around. Do three sets of 15 reps on each side.