- PrimarySecondaryTertiary
- Difficulty
- Novice
- Force
- Pull
- Grips
- None
- Mechanic
- Isolation
- Lie on your back. Raise your legs but bend your knees
- Keep a 90° angle at hips and knees. Lower your toes to the ground without bending your knees
- Make sure you maintain a flat lower back against the ground throughout the movement.