I worried that the nature justifiers might be overly romanticizing cavemen (especially the men) who presumably got to skip across the veldt stalking game, building up their deltoids and engaging in bro rituals by the light of a crackling fire.
Given that ethnographic studies of the few remaining hunter gatherer communities both now and in the relatively recent past all demonstrate that they work significantly fewer hours than we do and have relatively better health...eh. Maybe not as much romanticising as we'd all like to think.
