Why boys are generally taller than girls

I don't know if you have found that the general family kinda are boys grow taller than girls, so why do boys generally grow taller than girls in the same family? What are the reasons? A person's height, mainly depends on the length of the lower limb bones. The reason why women grow short, men grow high, the key lies in the development of the lower limb bones of men and women are different. The development of the lower limb bones is an important factor in the height difference between men and women. Some people have further studied the characteristics of bone development before and after the maturity of men and women, finally revealed the mystery of men than women: men and women from birth to puberty, the development of bones was a wave of growth, the annual increase of 3 to 7 centimeters, there is no big difference in height. To puberty, the girl (13 to 18 years old) bone development is very fast, to the junior high school stage, the height of the girl can exceed the boy, to be grown to 18 years old, the development stage tends to? The end? The bones of the lower limbs are no longer growing, and the height is also stabilized. Stabilized? up. Boys' puberty (15-20) starts later and ends relatively late. Moreover, after puberty ends, the bones of the lower limbs continue to grow, usually until the age of 23 before they gradually end. Thus, since the duration of puberty in men exceeds that of women by about five years, it follows that the average man is generally higher than the average woman on the whole.

By the role of sex hormones and growth hormone, boys eat and exercise, and more than girls to be large, so it is easier to meet the growth of protein, calcium, phosphorus and other substances necessary for the need and absorption, so the boys in the high at the same time, and often stronger than girls. This is mainly related to the evolution of mankind, both primitive and agricultural societies, men are responsible for the physical aspects of labor, the labor force is strong that means people are strong, men naturally carry more responsibility. Although, today's society with the improvement of productivity, no longer rely on physical labor, but still men tall and masculine, women petite and gentle image still exists.

Now human civilization is very high, no matter how tall or short anyone is, as long as there are advantages in talent, status, wealth, emotional intelligence, etc., the competitiveness of the people is not lost to the taller people. So don't be presumptuous or too complacent because of your height.