The stability ball squat is also referred to as the "wall squat." It is a great exercise for the leg muscles. It targets each muscle of the leg, with an emphasis in the upper portion. To perform this exercise, stand with your back leaning against the ball. Your feet should be positioned out in front of you, and about shoulder width apart. Next, squat down into a seated position. The key is to not avoid letting the knees go past the toes as you squat down. Then return to the starting position.

This exercise can be modified to increase or decrease the level of difficulty. To make the stability squat more difficult, consider adding resistance. This modification will force the leg muscles to work harder. To make the stability ball squat easier, a partial movement or half squat can be performed.