What Does It Mean to Wake Up with Your Pillow Wet with Drool?

A Natural Reflex Related to Deep Relaxation

Drooling during sleep is a natural bodily response when it reaches a state of deep relaxation. At night, especially in deep sleep phases, everything slows down: breathing becomes more regular, the heart rate calms, and muscles relax. The jaw might slightly open, allowing saliva to escape.

Contrary to popular belief, this is neither a lack of control nor a dysfunction. It’s simply a sign that your body is letting go, much like when you fall into a deep sleep after a busy day.