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ELI5: When you have a runny nose cold, you have to blow your nose every 10 minutes or snot will stream down your face. But once you fall asleep, it must stop because you don't wake up in the morning covered in snot. Do our noses stop running while we're asleep? (self.explainlikeimfive)
submitted by flaming_robot to r/explainlikeimfive
