Stand with the ball resting between the wall and the middle of your back.
Place a ball or a rolled up towel between both of your knees.
Your feet should be placed in front of you, shoulder width apart and your toes pointing forward.
Flatten your lower back and tighten your core stability muscles before you slowly squat down.
Keep your knees squeezed together and only bend your knees as far as you feel able to before you stop and hold this position.
Tighten your buttock muscles before straightening your knees and returning to the start.