Sleep Posture 101: Wake Up Pain-Free Back Sleeping What Not to Do Flat legs without support Spine arches awkwardly Results in lower back pain Better Back Sleeping Slide a pillow under your knees Choose a contoured neck pillow Keeps your spine in a neutral position Side Sleeping Common Mistakes Shoulder bears too much weight Spine twists during the night Pressure on hips builds up Better Side Sleeping Put a pillow between your knees Use a firm pillow for neck and shoulder support Helps your spine stay straight and relaxed Pro Tip: Good posture overnight means fewer aches in the morning!