The position you sleep in each night can affect more than just your comfort. According to sleep experts and medical professionals, the way your body is positioned may influence digestion, breathing, and even how often you wake during the night. While there is no single “perfect” sleeping position for everyone, understanding how different positions affect the body can help you choose what works best for your health.

For many people, sleeping on the left side may help reduce nighttime acid reflux. Because of the natural shape and position of the stomach, this sleeping position can make it more difficult for stomach acid to flow back into the esophagus. By contrast, some people who regularly sleep on their right side may notice that heartburn or acid reflux symptoms become more noticeable, particularly after eating a large meal before bedtime.

That doesn’t mean sleeping on your right side is harmful for everyone. Many healthy people sleep comfortably on their right side without any problems at all. The best sleeping position depends on your individual health, medical conditions, and personal comfort. People with certain heart conditions, shoulder pain, pregnancy, or chronic reflux may receive different recommendations from their healthcare provider.

Experts also agree that good sleep habits extend beyond body position. Using a supportive pillow, maintaining proper spinal alignment, avoiding heavy meals shortly before bed, and keeping a consistent sleep schedule often have a much greater impact on sleep quality than sleeping on one particular side alone.

Sleeping on your left side may provide benefits for some people, especially those who experience frequent acid reflux, but there is no universal rule that everyone must avoid sleeping on the right side. Choosing a comfortable position that supports restful sleep while addressing your own health needs is the most effective approach.