Waking up to a wet pillow can feel embarrassing, especially when it happens regularly. Many people simply blame deep sleep and move on. But there can be more behind nighttime drooling than you might expect. Your sleeping position, blocked nose, mouth breathing and certain sleep-related conditions can all play a role. The interesting part is that excessive saliva production is not always the problem. Sometimes, your body produces a normal amount of saliva, but an open mouth during sleep allows it to escape. Understanding the actual reason can help you decide whether it is harmless or worth discussing with a doctor.
