I took a Feldenkrais class for the first time today. I liked one move for the obliques. It may be hard to explain online or on paper. "Stand" on your forearms and knees. Turn out your right leg so that you are supporting yourself on the inside of your right knee. Your right leg is thus "collapsed". Your left leg is in normal position. Now, bring your left knee to your right shoulder (or as far near as you can). You are still rested on your forearms and inner right knee. That targets your left obliques. Now reverse legs. Do five times each side. Advance until you can do more.
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.