Note: while this is indeed the Japanese standard, it’s not universal: houses of Honshu (the main island) tend to be badly insulated, drafty, and spot-heated. Ho

Note: while this is indeed the Japanese standard, it’s not universal: houses of Honshu (the main island) tend to be badly insulated, drafty, and spot-heated. Houses of Hokkaido (and possibly northern Honshu) are much closer to western standards, with insulation and central heating. The cold is not an issue in and of itself, but it can be a problem depending on other ailments, as well as habits and habituation.