Ah so I'm not the only one roughing it this winter
I think there are a few of us. We are in a caravan on a north facing croft halfway up a mountainside. The ground has been white all but 2 or 3 days over the last 2 weeks. The lowest
indoor temperature so far this winter has been -6 but most mornings recently it has been -2 or -3 indoors. Had to learn a few practical things about how to make things work eg. how to stop the door freezing shut and the bottom of the duvet freezing to the wall.
You really do get used to the cold and your body and brain adapt to cope with it.
Being out and about working on the croft keeps you warm all day.
Plenty clothes and a wooly hat are a must as is keeping dry.
I find I am eating a bit more that I used to (without putting on any weight).
In the old days the kitchen fire would be going from early morning to late night as it was needed for cooking, this would put a bit of warmth into the stones of the building.
The old blackhouses were probably not that badly insulated, 3ft thick walls with a turf core which would prevent drafts, a thick layer of thatch, earth floor (not nearly as cold on the feet as stone or concrete), low roofs and in the most basic houses no chimney (therefore no drafts (or insects as the house would be fumigated all the time), I guess lung cancer wasn't so high up peoples concerns then either!)