Proper Sleeping Posture Guide: Side & Back Sleepers for Spinal Health #2112949 (License: Personal Use)

The image demonstrates four sleeping positions using articulated mannequins: two recommended (side-lying with a knee pillow and supine with neutral arm placement) and two discouraged (side-lying without knee support causing hip tilt, and back-lying with arms overhead or crossed over chest). Each posture is clearly marked with green checkmarks for correctness and red Xs for errors, emphasizing spinal alignment and joint comfort.

Used on health, orthopedic, or sleep hygiene web pages to educate users on ergonomics during rest; matches user intent seeking relief from back/neck pain or improving sleep quality through posture correction.