Stand against a wall with a stability ball placed at your lower back/sacrum level. Position feet shoulder-width apart, slightly ahead of the hips, with the core engaged.

1. Slowly bend your knees and hips, allowing the ball to roll up your back as you descend.
2. Maintain contact with the ball and wall throughout the descent.
3. Continue lowering until your thighs are parallel to the floor or knees are at 90 degrees.
4. Drive through your heels and push back up to the starting standing position.