If sleeping tight means nodding off on your right, you could be exposed to a health risk. Your right side houses your entire cardiovascular system, so added pressure on this part of the body actually constricts your rib cage and strains your lungs. “You’re most likely to experience acid reflux and even heart failure,” says Winter. But don’t freak out quite yet: If you’re in good overall health, there’s no reason to worry that sleeping on your right side could cause harm. However, if you have certain medical conditions like heartburn, or if you’re pregnant, you may want to move to the left (not to mention, you’ll score the health benefits on slide 2).
Score Better Sleep: If you need to stick to the right, Robart suggests rolling up a small towel and “placing it in the small of your waist to avoid sinking into the mattress,” which can alleviate pressure on your organs and help you snooze soundly.