Here is a warm-up move from Martha Graham School of Contemporary Dance:
Sit with your legs parallel in front of you, your right leg over your left leg at the ankle.. Keep your back straight. Contract your abdominal muscles and slowly lie down. Release the contraction and straighten your back again. Your back will be a little rounded, and 45 degrees from the floor. Now slowly lift your right leg, toes pointed, 70 degrees from the floor. Slowly lower the leg. Go back to the first position, with your left leg in front of your right leg at the ankle. Repeat for the other leg. Do this ten times for each leg.
Now get a massage!
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.