Have you ever wondered whether the side you sleep on could affect your health? Most people have a favorite sleeping position and rarely think about changing it. Some feel comfortable on their right side, while others prefer their left or back. But researchers have discovered that sleeping positions can influence certain bodily functions, particularly when it comes to nighttime heartburn, breathing, and comfort during pregnancy.

One position that has attracted considerable attention is sleeping on the left side. Because our internal organs are not arranged symmetrically, gravity can affect how stomach contents move when we lie down. This is especially important for people who experience acid reflux, a condition in which stomach contents flow back toward the esophagus and cause an uncomfortable burning sensation. Research suggests that lying on the left side may help reduce nighttime reflux in some individuals.

But does that mean sleeping on your right side is unhealthy? The answer may surprise you.

Continue below in Part 2.