- Position a stability ball in the small of the back against a wall.
- Lift the right leg up, while slowly squatting down on the left leg through the desired range of motion.
- The right leg will be flexed to about 90 degrees throughout and move beneath the body and toward the wall.
- Pause for 1-2 seconds and return to the start position.
- Repeat for time or reps and switch sides.
- Focus on maintaining an erect posture and not allowing the knee to cave in.