You wake up, still a little groggy, and then—surprise: your pillow is damp, and so is your cheek. A bit embarrassing, right?

But this little nighttime inconvenience is more common—and more revealing—than you might think. What if, instead of being a problem, it’s actually a positive signal from your body? Let’s take a closer look at this natural but intriguing phenomenon.

Drooling in your sleep: a sign of deep rest?
It may be hard to believe, but yes—drooling at night can actually mean you’re sleeping deeply! During the most restorative stages of sleep, your body relaxes completely, including the muscles in your face.

As a result, saliva doesn’t flow naturally toward your throat and can end up on your pillow instead. Reassuring, isn’t it? It’s as if your body is saying: “You’re finally getting the rest you need!”

It’s all about position (and gravity)
Do you sleep on your stomach or your side? That’s the perfect position… for drooling. Gravity simply pulls the saliva outward. On the other hand, sleeping on your back often prevents this because you swallow unconsciously more easily.
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