Growing up in the Praries, and enjoying most winter activities in all but the coldest temps.. I think I, and a lot of us do get plenty of cold exposure which in turn is great for the metabolism and immune system.
I for one can tell you that a full hard day out skiing on a cold -15 day or more, that your body goes through full thermogenesis and all you want to do all evening if eat and sleep. Same kinda goes for me if I'm ice fishing without a hut, almost deliberately also to just get that cold exposure.
As of late, I've been trying to reduce my reliance on excess layers and though I've taken cold showered in the past to cool down from say an intense HIIT - type workout or a hard hockey game, I'm now going to just 'Brave' taking 2x 3min pure cold a showers a day.
Curious if anyone else is getting into this, as honestly it does feel great afterwards. I've also found myself weening off of my coffee addition as I've been sleeping better, with the aid of pure CBD oil to help deal with some chronic injury pain.