This is something I always wondered because some people have a bunch of theories about whether your head should face north or south or whatever, because of the earth magnetic field. Is there any science in this or just “superstition”?

Also, would it be better to have the head towards a window or away from a window, even if closed (e.g. in winter)?

I’m basically asking whether there exist “recommendations” on how to structure a bedroom backed by science.