The Real Reason You Need To Sleep With Pillows

Seven thousand years ago, our ancestors were already in the habit of laying their heads on a pillow when going to sleep. Of course, since at that time pillows were made of stone, wood, or ceramic, comfort may not have been the main goal. But still, it's likely that someone discovered early on that his or her neck hurt less after being elevated a few inches during the night, and the idea caught on.

Matthew O'Rourke, a physical therapist at Spaulding Rehabilitation Hospital, explained it to Harvard Health Publishing this way: "If your neck is bent in any way for an extended period of time, you'll get uncomfortable." The human spine naturally curves in three places — at the neck, mid-back, and lower back. The key to getting a good night sleep, which in turn contributes to overall health and normal functioning during the day, is to keep the spine in a natural alignment, with a fairly straight line running from your ear through your shoulder, hip, knee, and down to the ankle (via Best Life). Basically, good posture is important 24/7, not just during your waking hours, to reduce strain on the muscles, joints, and ligaments.