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Against The Wind: How not to freeze your balls off running in Minnesota [VIDEO OF THE DAY]

Guard the family jewels.

Guard the family jewels.

It's one of the laws of nature: Things contract in the cold.

Artist David Gillette has some first-hand experience with this phenomenon as it applies to the male anatomy, thanks to under-dressing for his annual, epic, beat-the-cabin-fever run.

To help his brethren avoid the same painful mistake, he offers this video advice:

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Hat tip: MinnPost.