One way to keep your neck properly aligned is to sleep with a cervical pillow. A proper fittingcervical pillow can help you maintain the normal cervical curve while sleeping on your back, allowing your muscles and ligaments to relax and regain their normal length. This specialized pillow can also aid side sleepers by preventing unnatural bending in the neck. It will offer support where your traditional pillow will not. Your pillow should always support the back of your neck and the head.