Why is the temperature cold and the body tall?

Cold areas can stimulate human growth hormone more than warm areas, and because of the cold weather, people will eat more food, of course, it is easier to grow taller. Therefore, people in cold areas such as Russia and Yugoslavia are generally very tall, and northern China is no exception.

There is also the higher the latitude, the farther away from the equator, the colder the weather, and people need to reduce the unit energy loss and must increase the body surface area, so northerners are taller. On the contrary, southerners, close to the equator, have to reduce their body surface area in hot weather, so they are shorter. In fact, not only humans, but also other animals. The colder the same species, the bigger it is, just as the Northeast Tiger is bigger than the South China Tiger, and the polar bear is much bigger than the tropical Malay Bear.