They are taller and have more muscles, so their basal metabolism is much more than that of Asians. In addition, Europe and America are generally colder than Asia, so they have evolved bigger bones, stronger muscles and more hair, so they need more calories to keep out the cold. Their eating habits have been like this for a long time, and they like to eat meat, cheese and so on. But not all foreigners are in good shape. There are more fat people than China, and thin foreigners also pay great attention to a balanced diet. It's all up to me. I hope I can give you some advice.