roll swiss ball toward chest by flexing knees while maintaining prone plank position, then extend knees to return
Lie on the stomach with hand under the shoulder keeping elbows straight on the floor and foot on the ball. Using the legs roll the ball towards the chest as trying to touch the knees to the chest, roll the ball away from the body by starightening the knees. Repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.
