Warming an apartment by ventilating the air to dry

 "A66.   In the old times people spent lots of time outdoors, so propably they did not feel so cold indoors either. If it is cool and moist indoors but quite much colder outdoors, then even if it is raining, open a window and ventilate quickly a quite big part of the room's air and while doing that keep woolen socks on feet and a blanket around your feet, a woolen shirt on too, and then shut the wo´indows etc and keep the blanket etc and let the warm air near the roof of the room warm quickly the new cold and so much more dry air in the room and so in a few minutes you can have a warm room."   learntalents.blogspot.com