In general, people should sleep in whatever position feels most comfortable. However, if you experience issues such as back pain, jaw discomfort, digestive problems, or other symptoms, it may be worth reconsidering how you sleep. More specifically, sleeping on your left side may offer additional benefits.
Health Benefits of Sleeping on Your Side
1. Reducing back pain
Sleeping on your stomach can place excess pressure on the spine and lead to aches and stiffness. Side sleeping helps keep the spine in a more natural, straight alignment and reduces pressure on the lower back.
2. Reducing snoring
When you sleep on your back, the tongue and soft palate can fall backward and partially block the airway, which increases snoring. This is also common in people with sleep apnea. Side sleeping helps keep the tongue forward and the airway more open.
3. Improving digestion
Sleeping on the left side, in particular, may ease digestive issues such as bloating, constipation, and heartburn. Because the stomach is located on the left side of the body, lying on this side allows gravity to assist digestion more effectively.
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.