[skhr0680]

In summer: you need a shower to wash the sweat off

In winter: you need a bath to get as warm as possible before going to bed. Until recently (~1980s-90s) houses were expected to be ephemeral, whether they were knocked over by an earthquake or the new owner, so people skipped "luxuries" like insulation.

[hermitcrab]

>In winter: you need a bath to get as warm as possible before going to bed

Have you tried an electric blanket?