3. Less Heartburn
Wow, does heartburn hurt. It can be a side effect of eating before bed, as a prone position may allow stomach acid to more easily creep up your esophagus. Interestingly, scientists have found that sleeping on your left side can minimize heartburn while sleeping on the right can cause it to flare up.
It may be down to the stomach’s residence on the left side of our bodies. When we lay on our left side, the junction of stomach and esophagus is kept higher than the level of stomach acid. On the right side, however, the lower esophageal sphincter is relaxed and can let acid creep through.