Earlier quoted context omitted.
I believe there’s research in the social sciences that show that social contact and connections have a very positive impact on people’s health. Of course, such studies measure the average so each individual’s situation may be different. But it’s also not clear to me why it would be different for such large of a group.
I've always wondered if you were a recluse but had an excellent diet/fitness routine that the social contact benefits for health would not matter anymore. It's actually the best possible scenario for getting extremely fit because you don't have a job or social obligations.
Solitary confinement in prisons is known to be detrimental to mental health so that seems most likely to be false.