1. Start by lying on top of a stability ball with your upper back.
2. Create a table top with your trunk. Knees should be bent at 90 degrees and your trunk parallel to the floor.
3. Maintain this table top by contracting your abs, and glutes.
4. Raise one leg off the floor maintaining the table top position and extend the knee.
5. Return to the starting position and repeat with the other leg.
