There are several advantages to sleeping on your left side.
Helps Prevent Heartburn During the Night:
Those who suffer from gastroesophageal reflux disease (GERD) or acid reflux may find that resting on their left side is helpful to their condition. It is more likely that acid will flow back into the esophagus when the stomach is positioned in this manner because it helps to keep the stomach below the esophagus.
