Comfortable Positions To Sleep. This rules out sleeping in a prone, or face down, position, as it forces your lower back to curve sharply. Put a pillow between your legs.
The soldier position is when you are on your back with your legs straight out in front of you with your arms to your side touching your body. Prone sleep may also be better for easing chronic muscle and joint pain. To make this position more comfortable, try putting a pillow between your bent legs.