How to perform
Sit with your feet on the platform and a slight bend in the knees.
Start with your arms extended and your upper back stretched forward, without rounding the lower back.
Pull the handle to your stomach, driving your elbows back and squeezing your shoulder blades together.
Return under control, allowing your shoulder blades to travel forward at the end.
Common mistakes: rocking backwards and forwards with the torso, and shrugging the shoulders up towards the ears.