Sit down and bend your knees. They do not have to be at 90 degrees. The angle between your waist (upper body) and legs should be about 110 degrees. Grab a medicine ball or free weight with a weight you can do but that is challenging for four sets of ten repetitions. Face forward (ribs forward). Twist to the right and let the weight go to the floor. Face forward again and move backward two to three inches. Now twist again, pick up the weight, holding it in front of your belly, and bring it slowly to your left side (twist to the left). Let it go on the floor next to your left side. Face forward, move backward two to three inches, twist to the left and pick up the weight again. Start your second repetition. This is a great strengthening exercise. If it is too difficult for you to move backward after you face front, skip this step until you are able to do it.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.