1. Lie on your back on the floor (or a firm surface) with your knees bent and your feet about hip-width apart.
2. Tuck your chin, and relax your shoulders.
3. Reach your arms straight out to the sides.
4. Bend your elbows. Your arms should make an L on each side. Your palms should face up.
5. If you don't feel a mild stretch in your shoulders and across your chest, use a foam roller or tightly rolled towels under your spine, from your tailbone to your head.
6. Relax in this position for at least 15 to 30 seconds. Keep breathing normally.
7. Repeat 2 to 4 times.

As you get used to this stretch, keep adding a little more time until you are able to relax in this position for up to 5 minutes. When you can relax for at least 2 minutes, you only need to do the exercise 1 time each session.