How to do it
Keep the resting arm pressed flat against the floor for stability.
- 1
Lie on your back with your arms extended out to the sides.
- 2
Cross your right ankle over your left knee.
- 3
Crunch up and reach your left hand towards your right ankle.
- 4
Return to the starting position and repeat on the opposite side.
- 5
Continue alternating sides for the desired number of repetitions.
Expert tip
Focus on using your obliques to perform the movement, and avoid straining your neck by keeping your gaze upwards.
Common mistakes
- ✕Jerking the torso upward with momentum
- ✕Arching the lower back off the floor
- ✕Reaching without crunching the torso