You know, our height is mainly determined by the length of the spine and lower limb bones, and the development of bones is influenced by sex hormones. If sexual development is premature, it will affect the bones and make them close prematurely. Girls generally reach puberty two years earlier than boys. In these two years, girls will continuously secrete estrogen to promote the growth of muscles and bones. So we will find that girls will be taller than boys when they first enter adolescence.

But estrogen can promote bone ossification, so girls will stop growing earlier than boys, so girls will generally be shorter than boys when they grow up.

Boys exercise much more than girls.

Boys exercise much more than girls. For example, in ancient times, boys had to do heavy work and plow fields, so they were stronger than women in all aspects. Since ancient times, it has been the distribution of men plowing and women weaving, so men eat more than women and eat more, which makes men look stronger. Boys also like sports, and they like to jump and jump every day, while girls are quiet, so the amount of exercise will also affect their height.

And women usually feel like losing weight. Once they reach puberty, they will start dieting to lose weight for fear of losing their shape. Because of this, their nutritional intake is greatly reduced. It can be said that in adolescence, when they grow up, they have missed the best period for a long time.

3, the needs of physiological development

We say that men are taller than women, generally based on lovers, that is, in people's subconscious, women are always looking for someone taller than themselves, thinking that only in this way can men protect themselves and feel that they are innocent girls.

In fact, in real life, there are still many women who are taller than men, but everyone has made a reasonable height combination when looking for a partner, so it gives people the impression that men are taller and women are lower.