The supine side kick exercise primarily targets the thigh abductors (gluteus medius). It is an easy, yet effective exercise that can be done anywhere. The resistance tubing should be secured around the ankles or shoes.

Once the legs move outward, the key is to control them as they return to the starting position. Because of the nature of the resistance tubing, the legs will have a tendency to want to "fling" back to the starting position. Try not to let the "rubber band effect" take place. It is important to keep the tension on the outer thigh muscles and control the momentum at all times.