START:  Slide the band over both feet, and up around the ankles, so it is flat against the legs. Lie on the ground,lying on your right side with both legs straight, putting your left leg directly on top of your right. You can put your right arm behind your head and your left arm can be on the floor on front of you for support. 

EXERCISE:  Raise your left leg high as you can without moving any other part of your body. Once you get tension in the band and your leg is as high as it can go without breaking form, return your left leg to the starting position in a controlled manner.