There is a golden dividing line for determining children’s short stature, and that is 4 years old. Because both boys and girls, around the age of 4, their body growth hormone, thyroxine has basically formed, diet, sleep habits gradually formed, from the figure can also be seen whether there are defects, these conditions play a decisive role in the future growth and development. Luo Feihong said that the peak of growth hormone secretion is during sleep, children should sleep more than 9 hours a day, the body’s growth hormone will be fully secreted, forming a virtuous cycle, the folklore is that “children sleep to grow meat” is this reason. 4 years old or so, children chewing function has been competent, this time to give them a balanced The body will get the necessary nutrients for growth, which will lay a good material foundation for normal growth. Around the age of 4, it is still a critical time for children’s brain development. At this time, more children exercise and do what they can to develop their intelligence, so that their minds are in an active stage, which will also promote endocrine, which is beneficial to growth. If an infant is 25 cm shorter than other children from 0 to 1 year old, 10 cm shorter than other children from 1 to 2 years old, and 5 cm shorter than other children after 2 years old, parents should take their child to the hospital for a checkup. How to predict your child’s height Boy’s future height (cm) = (father’s height + mother’s height) x 1.078 ÷ 2 Girl’s future height (cm) = (father’s height x 0.923 + mother’s height) ÷ 2 Tip: The influence of genetic factors on a child’s height is not absolute, the heritability of height in genetics is 0.72, meaning that 72% of a child’s height is influenced by heredity. So what other factors will affect the child’s height? In fact, the final height is also affected by other acquired factors.