Mainly related to geographical location and diet, they have less oil and salt, seldom eat meat, and their geographical location is relatively far north, just as people in Northeast China are taller than people in Taiwan Province Province, and a little taller will make them look thinner. There is also Korean culture, where the whole people love beauty and dress up. If they don't wear makeup, just like we don't brush our teeth and wash our faces, they will generally be thinner.

Just as China often said (relative to the northern region), beautiful women make handsome men in Qingdao and Dalian, and there are some similarities in Korean geographical environment and eating habits. They often eat seafood, and the hilly terrain is relatively located in northern Asia, so people there have better skin and taller bodies. Of course, it is not exactly the same. What I'm saying here is just similarities.

PS: Did the other two take the questioner as an idiot? Who asks questions just by looking at the stars? It must be universal. Besides, which country's stars are not all slim, is there a country that specializes in producing obese stars? You two are really great, catching the urgency of IQ. Also, how can there be no comparability? Relatively speaking, Europeans and Americans are generally fatter than Asians, and those countries in Southeast Asia are generally short. This is a fact. Of course, we can also say which country is fatter or thinner. PS: I said universality. Don't give individual examples.