Which side do you think it’s better to sleep on? Or perhaps it’s better to sleep on your back, or stomach? Well here’s a well considered argument for sleeping on your left side.
Sleeping on your left side aides lymphatic drainage (detoxification)
Your body has a sewer system called the lymphatic system. It is a system of vessels that drain metabolic end products and other debris (including viruses, bacteria and other toxins) from the tissues. Lymph nodes positioned along the course of this drainage system filter out toxins and microbes. Eventually this drainage is dumped back into the bloodstream so that it can be processed appropriately by both the liver and the kidneys.
The lymphatic drainage system is not symmetric in the body. Much more of the body’s lymphatic drainage reenters the bloodstream in the left chest area. You can see this asymmetry in the image below.
Lymph Notes (dot) Com explains this asymmetry:
Lymphatic system drainage is organized into two separate, and very unequal drainage areas. The right drainage area clears the right arm and chest. The left drainage area clears all of the other areas of the body including both legs, the lower trunk upper left of the chest, and the left arm.
The authors of an article at Health Freedoms (dot) Org maintain that sleeping on your left side aides lymphatic drainage from the larger lymph drainage field on the left side of the body:
Sleeping on your right side may make your lymphatic system run more sluggishly. A lymphatic system that does not run at full efficiency may be incapable of filtering toxins or properly moving lymph fluid throughout the body. Over time, this allows toxins to build up in your body and increase your risk of deadly diseases.