Was at the North Rim of the Grand Canyon yesterday wearing my new Pittsburgh forest MARPAT. Its made of sturdy material and despite strong cold winds coming up the canyon to the viewpoints I was warm....until I had to take a leak.

So I'm in the restroom in front of a urinal, raised the kilt to pee and suddenly got cold...like I dumped warm air out from under the kilt.

I know hot air rises etc. And can figure that the air under kilts gets warmed by body heat and keeps cold air out. Just wondering if there are any experts out there who can explain/refer to an article, about how that all works...

What effect is there from walking and swishing the kilt around, raising it to pee, strong cold winds, etc.

As long as I'm addicted I'd like to learn more about this wonderful "drug."