Place your thumb beneath your other fingers. Bring your arm to shoulder level. Place the part of the thumb that protrudes from your fingers against a wall. Twist your body away from that thumb until you cannot move more. Hold for 10 seconds. Repeat for the other arm.
Disclaimer: None of the above information can be taken as a substitute for advice from a medical professional such as a physician.
My third book, Pocket Guide to Fitness, is available on www.louizapatsis.com, http://www.authorhouse.com, www.bn.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.