Wait, my body's own heat is enough? Always has been.
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I live in a relatively warm part of Canada and let me tell you a sweater alone is not enough 😭 There are plenty of places in the USA Midwest and Europe that get colder.
I live in Northern mn where it goes like -40f I don’t wear more then two sweatshirts all of winter I don’t do outside activities in the cold tho
In -40f, if you don't have artificial heating in your house, your pipes will freeze.
Your pipes can freeze well before that.
Yeah, good luck with only a sweater in Newport VT.