Why You Pour Saliva on Your Pillow While Sleeping and What It Means According to Science

Waking up and noticing saliva on your pillow can be embarrassing, but there is usually no reason to worry.

Drooling while sleeping is common and, in many cases, simply happens because of the way you sleep or because your mouth is open during the night.

However, several factors can make you more likely to drool while sleeping. . ;view more / see video