Lie on your back on the floor. Bend your knees 90 degrees, and place your feet flat on the floor. You can cross your arms over your chest or keep them relaxed, not working, on your sides on the floor. Tilt your pelvis and push your lower back to the floor. Then slowly lift your buttocks off the floor as far as possible without straining. Hold for five seconds. Lower your buttocks to the floor. Breathe regularly.
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.