Sleeping on your left side may offer specific benefits, particularly for people experiencing nighttime acid reflux or discomfort during pregnancy. Although sleeping position can influence digestion, breathing, and comfort, not every claimed health benefit is supported by strong scientific evidence.
The body’s anatomy helps explain why position matters. The stomach lies mainly on the left side of the upper abdomen, while the liver occupies much of the right. Gravity can influence the movement of stomach contents, and the position of the body can affect pressure on joints and soft tissues.
