Studies have shown that sleeping on your left side is good for your body in many ways. This pose helps the stomach empty faster and eases the symptoms of gastroesophageal reflux disease (GERD).
The left side sleep position also lowers pressure on the heart, which makes the heart work better and lowers the risk of heart disease.
This sleep position is also good for pregnant women because it improves blood flow to the placenta and oxygen to the baby.