Exactly. Lack of obesity in Asians, like good grades, is only a mystery to people who didn't grow up with Asian friends. It's behavior. More specifically it's d

Exactly. Lack of obesity in Asians, like good grades, is only a mystery to people who didn't grow up with Asian friends. It's behavior. More specifically it's discipline, both personal and familial. For an Asian kid, drifting out of line often means getting insulted and humiliated at home. I'm not saying it's worth it, but someone who gets shamed for ordering extra fries tends not to grow up to eat fast food five times a week.