Warmth

It's immensely cold, as I told you in my previous post.

So, what to use to keep warm?
What does a person use to keep warm?
What do people use?

Is there anything that warms better than wood?

And is outside heat what we actually need most during the winter months, or something else?

Because I think people need to be warm inside, to have fire inside, you know what I mean, so they can be warm outside.