1.Heredity The proportion of heredity in the growth of height is about 75% to 79% or even more. Most members of an ethnic group or family have similar heights. 2.Nutrition In combination, there are three growth periods in a person’s life: within one year of age, preschool (4-6 years old), and adolescence (13-18 years old). All three periods are periods of surge in human development, so whether the nutrition in these periods is good will likely affect the child’s ultimate height. Nutrition is important during the fetal period, with calcium and zinc being particularly important. Children and adolescents belong to the “calcium” deficiency group. 3, sleep The child’s sleep is also a major factor in growing taller. The child’s limbs relax during sleep, the brain is also very relaxed, both can get a good rest; in addition, after the child falls asleep, the pressure on his lower limbs disappears, his pituitary gland anterior lobe can secrete a large number of growth hormone, and last a long time, very helpful for height development. Studies have found that the secretion of human growth hormone is cyclical, and it is most abundant at about 22:00. Insufficient sleep will limit the secretion of growth hormone in the child’s body, thus affecting height growth. Therefore, it is recommended that adolescents and children in the growth period combined with hormonal secretion characteristics to do early sleep, and to ensure sleep time. 4, emotions If the child is in a loving environment, his body and mind will be very happy; happy spirit is conducive to promoting the growth of the baby, so that the baby’s body growth potential to get the maximum development. And a day depressed, living in a dull and gloomy environment of the child will not be satisfied because of emotional and constant anxiety and affect growth. Children who do not get love and affection due to mental depression, the body secretion of growth hormone will be less, their average height may be lower than children of the same age. 5, exercise The relationship between exercise and height in the sports world has some debate. Generally speaking, those who can make the limbs get fully stretched project are helpful to height development (dance, artistic gymnastics leg press, etc.), while those who let the lower limbs are subject to excessive pressure, excessive mechanical exercise project is hindering height development. Children in the pre-puberty period are growing fast, and at this time muscle growth often lags behind bone, and some children even have growing pains. At this time, such as with reasonable nutrition and appropriate stretching activities will alleviate this phenomenon. Volleyball, basketball, soccer ballet, aerobics, stretching gymnastics jump rope, jogging, jumping touch high are conducive to height growth; weightlifting, weight-bearing exercises excessive exercise, excessive consumption of sports (marathon, etc.) is not conducive to the growth of sports.