Reduce back pain – Sleeping on the stomach could pressure the spine and cause aching. Side sleeping keeps the spine in a naturally straight position and reduces the pressure in the lower back.
Reduce snoring – Sleeping on the back causes the tongue and soft palate to slide backward and partially cover the airway, causing increased snoring. It’s also a common occurrence for people with sleep apnea. But side-sleeping keeps the tongue forward and the airway clear.
Improve digestion – Sleeping on the left side, in particular, could ease some gastrointestinal symptoms like bloating, constipation, and heartburn. The stomach is on the left side of the body, so lying on that side allows gravity to aid the digestion process.