Heat (What? Again?)

So now I have a heater in my room that does more than act as a fire without the comforting sounds and hypnotic movements.  Really, that stove only had the downsides of fire-heat.  It was a God-send those days though.
Now I spend my days in comfort, allowing my electric bill to steadily climb (to which I say, meh, it is still cheap).  If I have successfully conquered heating my room, why then would  I continue to talk about heating?  Really, there a ton of interesting things here to see and do, but the Japanese have several other intuitive ways of heating, read on!

Heat

In Canada we have Central Heating, which means that even when it is very cold outside, all of the rooms in our houses are heated evenly (more or less).  We also construct most buildings to retain heat.  Doors and windows that seal well, central rooms, etc.  In Japan, things are very different.