Sit in a neutral position on a stability ball.
Make sure the ball is inflated enough for your knees to be slightly higher than your hips.
You may want to be close to a wall or chair to hold on to whilst finding your confidence.
Start the exercise by rolling slowly sideways from one side to the other.
Start doing a small circular motion, and gradually increase the size.
Perform 3-4 circles on side, and 3-4 on the other side.
Gradually decrease the amplitude of the circles to finish sitting in the centre of the ball.