Of course, these effects aren’t the same for everyone. Plenty of people sleep on their right side without any noticeable problems. But if you’re dealing with morning grogginess, digestive discomfort, or unsettled sleep, your habitual position could be playing a role.The exciting part? Research highlights some clear advantages to trying the other side.Why Left-Side Sleeping Often Gets the Nod from ExpertsMultiple studies, including systematic reviews in journals like the American Journal of Gastroenterology, point to left-side sleeping as potentially better for several bodily functions.Here’s why it stands out:Easier Digestion: Gravity helps move food smoothly through the stomach and into the intestines in this position.Less Nighttime Heartburn: Reviews show left-side sleeping keeps the junction between the stomach and esophagus above acid levels, reducing reflux episodes and exposure time.Improved Circulation: It may reduce pressure on the heart and major blood vessels, supporting better blood return.Better Detox Support: Aligning with the main lymphatic drainage routes on the left could enhance waste removal.Plus, animal research on the brain’s glymphatic system—the process that clears waste during sleep—suggests side sleeping overall (and lateral positions) promotes more efficient brain cleansing than back or stomach postures.Ultimately, the ideal position is personal. But for many seeking general wellness benefits, left-side sleeping emerges as a strong, research-backed option.