View this exercise on Fitain
- Body weight
1) Lay on your back, bend your knees and plant the feet on the floor - your knees should face upwards.
2) Place your hands on the opposite shoulders and tilt your chin to the chest.
1) Curl up by tightening the core.
2) Pause for a second and 'crunch' at the top. Now, slowly lower yourself to the starting position.