When you’re asleep, it’s NOT normal to drool – that’s when you salivate, but don’t swallow. Because even at night, we swallow about 3 times an hour. So why do we wake up in a pool of drool? One reason: We sleep on our side, so saliva doesn’t collect in our mouth and trigger our swallowing reflex. Also, people with sleep apnea drool because their swallow-reflex is damaged. We also drool when we smell delicious food, even if we’re sleeping or the aromas are in our DREAMS. So, you drool at night because you’re a side sleeper, you have sleep apnea, or someone’s baking cookies at 2AM, at least in your dreams.

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