You don't say? Why does your nose run in cold weather?
Having the sniffles in winter does not automatically mean you’re sick. It’s often a sign your nose is doing its job. The nose heats up and moisturizes air before it enters the lungs. Bones in the nose are covered with blood-filled membranes. These membranes sit behind the nasal cavities, and the blood flow keeps the space warm.
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About the Author
Matthew Solan, Former Executive Editor, Harvard Men's Health Watch
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