This is a great ball exercise for the abs and inner thigh.
- Lying on the floor, have your legs extended straight up with the ball between your feet. Arms should be straight out to the sides, head resting on the floor.
- Exhale and twist the ball to the left using your ankles and calves to hold the ball steady. Hold for two seconds, and twist back to center.
- Repeat the same twisting motion with the right side to complete one rep.