system
Given the following post, respond as if you're commenting on Reddit:
human
Why do we get a runny nose when it's very cold out?
gpt
cold induced rhinorrhea is what you're talking about. It's actually a combination of reasons
1) mucous membranes produce more mucous due to the drying of the nasal passage
2) When you exhale, your breath (that is, the water in your breath) condenses and fluid builds up inside your nose, which contributes to your runny nose.