Why is it that some poor men are more macho than men that go to gyms? Yet they seldom eat meat coz theyr poor?

I've seen a lot of these guys in 3rd world countries. Some are garbage collectors and some do physical work but they can't eat lean meat all the time since they're poor so instead, they eat cheap veggies and bread. Yet, some are even bigger than men that are rich and go to gym and drink supplements. Why?