7 Reasons Why You Should Sleep On Your Left Side

4. Supports the Lymphatic System

Sleeping on your left side helps the lymphatic system, a network of vessels that carry a clear fluid called lymph, and also includes filtering toxins and waste material. It also plays an important role in the health of your immune system, and a block in it could spell trouble.

Similar to your aorta, the lymphatic system tends to lean left as it filters out waste and drains through the thoracic duct. Sleeping on your left ensures that gravity helps with this natural bodily function.