First of all, the living environment is different and the concept of life is different. We think that drinking more hot water and boiled water is very beneficial to our health. After all, most bacteria are killed after boiling water is sterilized, which may be better for our health, especially in winter or when women come. Drinking more hot water during physiological period is really useful, but it is not the case in Europe and America. Europeans and Americans have never had the habit of drinking hot water since childhood, just as we like to eat stir-fried dishes since childhood. So there is no problem of health and unhealthy.
Secondly, the physique is different. Congenital Europeans and Americans haven't had confinement yet, and we in China still need confinement. Can this explain who is healthier and who is less healthy? This is obviously wrong, because our constitution is like this. If we want to live a healthier life, we must have a confinement. Drinking more hot water is good for our health, but they are used to it, and basically don't want to have a confinement and then drink cold water. Maybe their water purification degree is higher, and the bacteria contained in it will be less harmful to our health. But because of industrial development, because the purification equipment is not particularly developed, there is not much water.
Europeans and Americans are different from us only in living habits and physical conditions, but it doesn't mean that we are healthy to drink hot water. When we don't drink hot water, they are unhealthy. They were strong when we were imprisoned, and we were weak when we were imprisoned. It doesn't make sense, because they are white and we are yellow, and people are always different. Although they are all human beings, there are indeed physiological differences.