Why do it?
Although it uses only your own bodyweight, this tough move hits your hamstrings hard.
How to do it:
- Lie with head, shoulders and upper back on a gym mat with your feet together on tip of the gym ball. Your body should form a straight line from head to heels.
- With your back straight, raise your hips and use your heels to drag the ball towards you.
- Pause briefly at the top of the move before slowly returning to the start.
