6. Gives your heart a rest
From the moment of its existence, the heart must beat relentlessly to keep you alive. That is hard work and can be impacted by many factors from your diet to the quality of air in the environment. It is no surprise that it is the leading cause of death in adults worldwide. To minimize your risk, make your heart’s job easier by sleeping on your left side.
It sounds like a small thing, but when you sleep on your left side, you let gravity help your heart let the blood flow. The aorta carries blood from your heart to the rest of your body and arches to the left as it begins its routine.
When you lie down so that it points down, your heart has less trouble circulating the blood.