From a kneeling position place your feet onto an exercise ball. Draw your shoulder blades together, squeeze your buttocks and your local core and push your feet out behind you so that your legs are straight as shown in the image. Your shoulders should be directly above your hands and your body should form a straight line from your head to your feet. Hold this position for the duration indicated by your clinician.
Relax back down onto your knees. This completes one repetition.
Draw your belly button into your spine to activate your local core and support your lower back. Place your tongue on the roof of you mouth and relax your jaw to support your neck.
The closer together your feet are the more difficult this exercise is, the further apart they are the easier it is.