Weight will be affected by many factors, such as nutrition, disease, sleep and so on. It is easy to obtain the indicators reflecting children's growth, development and nutritional status, and it is also easy to measure accurately. It is usually used for growth monitoring to reflect the recent nutritional status.
Extended data:
Precautions:
1, generally 1 1~20 years old is called the stage of puberty, but now the average boy will enter puberty at 10~ 13 years old, so it is normal for you to start developing at 12 years old. Now that the living standard has improved, there is no shortage of nutrition, so the population will develop earlier than before. The developmental age of adolescence is not only related to heredity, but also to nutrition and acquired exercise.
2. 12-year-old boys will grow beards, armpit hair, body hair and pubic hair after puberty, and the hair distribution is obvious. At the same time, the Adam's apple will gradually protrude and the vocal cords will become longer, so the voice will become coarse, hoarse and low.
3. 12-year-old boys will gradually develop to the standard of men after entering adolescence. During this period, it is necessary to pay attention to strengthening nutrition, eating rules, work and rest rules, and doing more appropriate physical exercise, which can promote growth and development and promote height. Besides, you need to be careful not to drink or smoke, because these will affect your growth and development.
Baidu encyclopedia-children's standard weight