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.