HOW: Begin by sitting on a swissball with your knees bent and feet flat on the floor. Walk your feet out and roll the ball into the small of your back. Extend your arms straight out to the side with your palms up making a “T” position. Keep your hips up and tuck your chin as you slowly rock side to side for the prescribed amount of reps.
FEEL: You should feel your core muscles working.
COMPENSATION: Don’t allow your hips to drop as you move side to side on the ball. Keep your chin tucked and core engaged.