Physical Therapy Exercise for the Gluteus Medius- Clam shell

I went to physical therapy for the first time this week! And I have done a lot of exercising, dancing and walking! I need the physical therapy to stabilize and strengthen deep abdominal and other core muscles and to soothe tension in my hips and thighs.

The gluteus medialis, I was told, supports the hips and thus takes tension off the knees, which take a lot of wear and tear in anyone's life, especially an athlete's. Here is a simple exercise to strengthen this muscle. 

Lie down on your right side on an exercise mat. Make sure your hip bones are aligned and the lower back is not stuck out or ducked under your spine. Breathe in by expanding your rib cage and belly. When you breathe out, concentrate on your belly muscles contracting around your navel. Bend or straighten your right leg. Open a bent left leg like an opening clam shell (a nick name for this exercise) as far as you can without compromising your hip position. Close the leg so your knees meet. Do this slowly five to ten times. Repeat while on your left side.

My third book, Pocket Guide to Fitness, is available on http://www.authorhouse.com and http://www.amazon.com. If you look up my name on those Web sites, you will find my other books The Boy in a Wheelchair and Life, Work and Play: Poems and Short Stories.