Reverse Crunch

How To Perform

1. 1 Lie on your back with hands at your sides or under your hips.
2. 2 Lift your legs so your thighs are perpendicular to the floor and knees are bent at 90 degrees.
3. 3 Contract your abs to curl your hips off the floor, bringing your knees toward your chest.
4. 4 Slowly lower your hips back to the starting position.