Moving around and doing things in and around the house surely helps with keeping you warm. I know in the winter, when I sit and work, my hands always freeze because I do not move. But when I walk in the garden and do small tasks, my hands warm up!
Oh no, when I see the snow, I immediately get cold because my mind tells me it is cold. But I am sure your body gets used to it when you spend enough time in it!
I hope that the paint dries somehow! Good luck.