Take It Or Leave It Abdominal Crunch
- Lie down on your back, arms and legs extended, holding a Swiss ball in your hands.
- Engage your abdominals to lift your legs toward the ceiling and shoulders off the floor (Don't let your legs go past 90 degrees).
- Pass the ball to your feet, and return legs and arms toward the floor, keeping your limbs extended.
- Maintain tension on the abs, as you lift your arms and legs upward again, passing the ball back to your hands to complete one repetition.