Increased cold tolerance has been a nice little perk of gaining weight. Back when I was a twig my arms would start to look purple any time the weather dropped below 45 degrees. Now it doesn't bother me as much, and when I'm inside relaxing I have a much cozier feeling
Mind you I'm also from Texas so that's a pretty big trade off because my heat tolerance has dropped exponentially, doing literally anything down here in the summer is hell. And I swear when I was skinny I would hardly sweat at all, and I've certainly started to sweat a lot more.
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