Lie on your back with your knees bent and feet flat on the floor.
Ensure your knees and feet are hip-distance apart.
With your arms by your sides, tighten your abdominal muscles and curl your upper back up off the floor.
Keep your chin tucked in.
Holding this position, side bend your trunk to tap your fingers on the outside of the ankle on the same side.
Come back to the central position and side bend to touch the outside of your other ankle with your other hand.
Repeat this movement without lowering your upper body back down to the floor.
