http://www.curejoy.com/content/simple-yoga-stretches-for-relieving-chronic-sciatica-pain/ Link The Sciatic Nerve: The sciatic nerve, the largest single nerve in the body, runs from the lower back, down the back of each leg and is composed of individual nerve roots that start by branching out from the spine in the lower back and combine to form the sciatic nerve. Sciatica is not…