timelets

Maybe the weight thing is more about signaling than actual heath. I've never been to Latin America, but in the US when you go to college campuses you can see a big difference in student demeanor between elite and second-tier universities. On elite campuses students seem to show off their fitness level. Clothing and cars used to be the signaling mechanism, but now it's not cool, especially, among liberals, so people find other ways to signal class status (which is an improvement, I must say).