Although it has not been carefully studied, it seems that this is indeed the case. Wearing a tail suit a little like this. However, it is strange that Japanese clothes are long-sleeved. But it may not have universal significance. Yes, but I don't think it has anything to do with race. In my mind, there is a black buddy in NBA who stands upright with his hands knee-high. A foreigner 185' s palm is smaller than mine 170' s palm ... I am a little speechless. No. The proportion of human body is similar, but Europeans and Americans are taller than Asians because of their living and eating habits. This is related to human evolution, but also to the region. In addition, foreigners' diets are high in fat and calories. Such as steak and hamburgers. For example, China people are pandas and foreigners are tigers, hehe. This is related to human evolution, but also to the region. In addition, foreigners' diets are high in fat and calories. Such as steak and hamburgers. Hands are stretched out horizontally, and the distance from fingertips to fingertips is exactly the height of a person. So you can know the length of your hand by looking at your height. Studying in the United States, related, first of all, the average height of each race is different, including weight. The direct conclusion is that white blacks are more likely to be physically strong or strong. I think this is common sense. Secondly. Some of my exercisers at the China gym. And bodybuilders in American gyms. It's not a lump. In our school gymnasium, it is rare to see people whose arms are thinner than my legs. In gyms in China, I think my arms are in the top 50%. But I don't think there is much difference in muscle strength. I've met Middle Eastern people who are basically my weight. I do twice as much as I do, including my own weight in the gym, which is not much worse than that of white and black people. After all, I only practiced for about half a year. I have good physical fitness and all races are equal. It's good. Don't be blind and confident. Race is different.