
Instructions
- Lie flat on your back with your hands on your head
- Bend your knees up
- Sit straight up
- Crunch your abs aiming for your elbows to touch your thighs
- Lower yourself so your upper back touches the floor
- All movement should be generated by your abs, try to minimize the use of the hip flexors
Muscles involved
- Rectus Abdominis
- Iliopsoas