ga('create', 'UA-85088576-1', 'auto');
Please remember, as with any exercises, to start at a level that is comfortable for you & that does not cause pain.
Sit tall on gym ball maintaining readiness position, hands relaxed on thighs or on gym ball.
Keeping feet flat on the floor, straighten then bend knees to roll ball back and forth.
Sit tall on gym ball, hands relaxed at sides or in cross arm position, as above.
Keeping shoulders level, hike one hip up at a time by rolling ball slowly from side to side.
Keep within pain free range of motion.