Earlier quoted context omitted.
Having slept outdoors a lot in the past, I think many people underestimate the importance of the ground/floor/bed in keeping from freezing. If you have excess blankets, it could make more difference to put them under you as opposed to above you. Even spruce branches or cardboard will lift you from the ground enough to make a difference in a pinch.
I agree - I packed an air mattress to sleep on during camping when it was cold on the ground. The air didn't insulate as well as I expected so I was freezing from below. There are so many things around us that are such incredible achievements in comfort over not having them. It is a good experience living without some of them for a while to get appreciation for it: - electricity - heating - beds - running water - sho…
Below, is super important.. I use closed-cell mats designed for winter camping and carrying in the backpack.
Somehow I don't think the cats would work so well under the sleeping bags..