"I've actually no idea how often I change bed linen. It certainly isn't done on a regular basis such as every whatever, just when it seems to need doing." Exactly, thatbags.
My point earlier is that bodies are much cleaner nowadays so wash when it needs doing. If you get night sweats it could be every day. If you don't and you're not doing anything to make you sweat it would be much less frequently...
Words you don’t often see now.
Unused rooms, heat storage and heat transfer





