Muscles Targeted: Hamstrings, Core
- Lie on a mat and put your feet up on a swiss ball
- Push down on the floor with your hands and raise your hips off the mat
- Keep your legs straight and flex your toes towards you
- Curl in the swiss ball towards your bum by bending your knees
- Pause at maximum flexion and then slowly straighten your legs controlling the ball
- Repeat this movement 10-20 times keeping your hips up at all times