The myth of the eight-hour sleep www.bbc.co.uk/news/magazine-16964783
I’ve posted this before because it was news to me. Apparently waking in the middle of the night was the common pattern. People might even have got together with others in many ways?. I know this doesn’t help one sleep but perhaps we are just reverting to the ways of our ancestors?
PS when DD was cabin crew Night Nurse was often used by crew so they could sleep at unlikely times to get up for early flights.
NHS U turn on trans terminology