4. Supporting brain health
Many people are unaware that the brain removes waste during sleep. Research suggests that side sleeping helps the brain clear metabolic waste more efficiently by supporting the glymphatic system, which functions similarly to the lymphatic system but within the central nervous system. Animal studies indicate this may help reduce the risk of Alzheimer’s, Parkinson’s, and other neurological diseases. More research in humans is needed to confirm these findings.
5. Improving blood flow during pregnancy
Proper circulation is especially important during pregnancy, as it allows blood to flow efficiently to the placenta. For this reason, pregnant women are often advised to sleep on their side.
How to Train Yourself to Sleep on Your Side
1. Choose the right pillow and mattress
Select a pillow that matches the shape of your collarbone and is firm enough to support your neck. Mattresses should generally be soft enough to prevent pressure from building up in the shoulders and hips, while still supporting spinal alignment.