Your mattress and the position you sleep in may affect your condition.
✓ Choose a mattress that provides medium or firm support, such as a traditional coil spring or adjustable airbed. Avoid waterbeds, thick pillow tops and soft, sagging mattresses.
✓ Always sleep on your back with a pillow either underneath your knees or on your side with a pillow between your knees. Avoid sleeping on your stomach.
✓ Keep your neck and back covered while sleeping to avoid drafts that could cause potential muscle spasms. http://ow.ly/i/uGj1n