Rotational Ball Slam
This is an advanced rotational core exercise that will help you resist too much rotation of your lumbar spine.
- Start in a lunge with your right leg forward. Be sure to keep your knee over your ankle, maintaining a 90-degree angle at the knee.
- With the ball on the left side of your body, raise it up overhead, rotate your arms to the right, and slam the ball down on the outside of your right foot.