5. Prevents Snoring.
If your spouse snores, or you’re the one aggravating your spouse with room-shaking noise all night, left-sided sleeping could make all the difference in your mutual happiness. Before you get too excited, this won’t cure all causes of snoring. But it does keep your tongue and throat in a more neutral position and leaves the airways clear. In sleep, the mouth, throat, and tongue relax. Back sleeping is the worst for snorers, because those tissues relax backward and may partially obstruct the airway.