This exercise will improve global stability by increasing strength and motor control of your rotary trunk stabilizers.
Start by lying flat on your back with your arms extended above your head and legs straight. Lift your right leg across your body and roll over without using your hands or upper body to assist. Now, try to contract your right glute, lift your leg and roll back without using your hands or arms. Complete 5 repetitions on each side. Now, try using only your upper body. Lift your head, reach your right arm across your body and roll to your stomach. Try not to use your feet or legs. From your stomach, try to lift your head, raise your right arm and roll back. Again try not to use your feet or legs to help. Repeat 5 times on each side.