To do this exercise you will need a mat and a large physioball. Start by bearing weight on your hands and placing your shins on the top of the ball. Be sure that you are supporting the length of your spine with the abdominals and that you are maintaining the connection of the ribcage to the front of the pelvis. Inhale to prepare and then exhale as you lift one leg off of the ball. Inhale to replace the leg and exhale as you lift the other leg off of the ball. Repeat 8-10 times on each side.
Things to think about
All of our proprioceptive challenges with the foam roller were hard and the foam roller can only roll in two directions. Now imagine the infinite directions that a sphere can move. This requires much more abdominal control and relies on the stability of the shoulders and the pelvis to keep the spine safe.
Check in with your shoulders, are they connected to your ears? Be sure to slide the shoulder blades down your back and maintain soft elbows so that you can keep your neck and wrists safe.