I didn’t work 3rd shift (11pm-7am) but I worked 2nd shift (3pm-11pm) Mon-Fri. Found a 24/7 gym which was empty at night when I got off work (bonus), would get home from the gym at around 1230-1 am, would do my meal prep and house work till about 2am then I’d conk out for the night, wake up at around 10 or 11, go grocery shopping and run errands till about 1pm or just hang out and do random stuff. Wasn’t hard to stay healthy. mind you I’m a staunch anti-social and was single at the time which made it infinitely easier because I didn’t have a commitment to anyone besides myself but after getting married and having a kid, physical health wasn’t hard to maintain. It became difficult to manage my martial and mental health.
And extreme toxicity to the point that it drives everyone away from them so they just start with some Olympic level mental gymnastics to explain why it’s not their fault people hate them.