This is a great ball exercise to work the abdominal muscles.
- Sitting on the floor, have the exercise ball resting between the legs about a foot off the ground. Lean your body back with your hands resting behind you, leaving only your buttocks and your hands on the floor.
- Exhale and bring your knees inwards towards your chest. Hold for 2 seconds, and release for one rep. Repeat motion for continual reps.