Well, after researching this topic for several years, i can condense it into this.
Lifting unusually heavy things, and running unusually long distances do more long term harm than good. Think doing heavy squats, and running marathons.
The only benefit I can think of for doing heavy lifts, is to impress to bros, and get buff for a party fast, while taking a semi-legal supplement. heavy lifting does not have long term advantages.
Why? To have a reasonable measure for the intelligence of their children.
Heard of regression to the mean? An unusually smart person from a background of dumb hick proles, is not going to have kids nearly as smart as they are.
People understand this at a genetic level when picking out mates. “Meet the family” before you decide to keep the girl/guy.