Good sleeping positions are those that keep the body aligned. They reduce pain and improve the quality of sleep. Some common sleeping positions can throw the body out of alignment, but most problems can be alleviated with the simple use of a pillow or towel.
Best Position
Sleeping on your back is the best position overall, according to CBSNews.com. The spine is allowed to stay in a natural, flat position (Reference 1).
Pillow Use
Using a pillow elevates and strains your neck. The very best position is to sleep on your back without a pillow. Or, try two pillows, one under the head and one under the knees, as recommended at MayoClinic.com (Reference 2).