The single leg squat is a great compound leg exercise that requires some balance. With a stability ball on the floor, place the ball behind you and put one leg on the ball so that your shin and top of your foot is making contact. You want to give yourself enough room to perform the exercise, so you may need to extend your leg a bit at the hip. Then simply perform a single leg squat, lowering your body towards the floor by bending at the knee and hip. Extending your arms out at the sides of your body will also help with balance. This is a great overall leg exercise, and if you find it difficult to do at first, stick with it, and as your balance improves so will your form.

Melissa Allen, BS, CPT, CES. Please visit my website at http://www.optimumcondition.org/fitness-center/location.html