Waking up with a wet pillow? Find out why you drool during sleep

Drooling during sleep is a common phenomenon experienced by many people.

While this is completely normal in most health conditions, in some cases it can be related to certain health conditions or sleep habits.

Below, we discuss the most common causes and when it could be a sign of something more serious.

Common causes of drooling at night

Muscle relaxation

During deep sleep, especially REM sleep, the muscles and body relax, including the muscles of the mouth and jaw. This can cause the mouth to open slightly and saliva to flow out instead of being swallowed, as happens when we are awake.

Sleeping position

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