My European coworkers take sick days when they get headaches, and go to the doctor because they get headaches "frequently" (about once a month). They consider the slightest inconvenience or pain to be a massive health problem. Not that this is necessarily true of all Europeans (though thus far it's been true of every European I've yet met to some degreee...), but Americans in general, and particularly men, have a more rugged and independent attitude towards healthcare, and have a considerably wider spectrum encompassing "good health." A broken rib is an inconvenience, not a health problem.
A broken rib is
Now I'm reminded by a picture I saw on Facebook, making the point that rugby players are so much braver than soccer players because soccer players will pretend to be hurt when they're hit no matter how lightly, whereas rugby players will keep on playing even with a broken rib. And I thought that, while I agree that pretending to be hurt to get a free kick or so that your opponent will get a yellow card is childish, I think that keeping on playing with a broken rib isn't brave -- it's silly.
Of course, it turns out they're actually last among developed nations in real health outcomes.