This exercise uses a stability ball as the base during your crunches.
- Lie on your back and place your feet up on a stability ball.
- Place your hands across your chest, or on either side of your head.
- Keeping the small of your back on the floor, raise your head, shoulders and chest up and off the floor.
- Pause for a moment contracting your abs and then return to the starting position.
- Take your time and perform this exercise in a slow controlled manner.