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303elliott t1_iz9hbfc wrote

Reply to comment by Pascalwb in A new study focuses on the crucial question of why people are more vulnerable to catching colds during the months of winter. The answer hinges on an evolved defense system, innate to the human nose, that is numbed by frigid temperatures. by BoredMamajamma

This is a little different. In the US they have the same belief, and there's a lot of evidence that staying warm actually does prevent getting sick because your body isn't wasting energy on extra metabolism, energy which could be instead used on your immune system. His belief was strictly about inhaling cold air. No open windows at night, no going out without a scarf covering your mouth.

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