1. Start on your hands and knees with your back flat and stomach tight. Straighten one leg behind you and place your opposite hand behind your head.
2. Bring your elbow under your body toward your opposite hip and pause.
3. Rotate your elbow back through the starting position and as high as possible and hold for 1 to 2 seconds.
4. Complete the set on one side before repeating on the other side.
Be sure to: Start with a small range of motion and gradually increase.
You should feel it: Working your torso.