1. Tighten your abdominal and buttock muscles.
2. Raise your hips up to create a straight line from your knees to shoulders.
3. Squeeze your core and try to pull your belly button back toward your spine.
4. Slowly raise and extend one leg while keeping your pelvis raised and level.
6. Return to the starting position with knees bent.
7. Perform the lift with the other leg.