I think you would die from the massive gravity pulling you to the center, probably flattened like a meat pancake

This only started to change 100 years ago around 1920s.

In the old days, before electricity people would wake up in the middle of the night and mingle before going back to their second sleep. Can read more about it here: https://www.bbc.com/future/article/20220107-the-lost-medieval-habit-of-biphasic-sleep

Later on the changed the sleeping patterns changed during the industrial revolution.

https://www.sleepadvisor.org/history-of-sleep/#:~:text=By%20the%201920s%2C%20all%20references,sleep%20schedule%20had%20entirely%20ceased.