When I watched Pi, I was deeply impressed by a small detail. When the basketball team in the experimental class wanted to recruit players, a little boy excitedly raised his hand and stood up and said, "I signed up." Jiang Tianhao, who was in charge of recruiting, looked at the little boy in distress situation, touched his head and said, "Stop it, wait until you grow up." When the little boy heard Jiang Tianhao say this, he instantly faded like a frosted eggplant.

Although the scenes set in the TV series are designed to increase the funny effect, they also tell us the fact that adolescent boys have their own unique developmental laws. If parents can't guide their children correctly, short-term stunting will probably cause their children's long-term inferiority complex. Then, as parents, we should tell our children such little physiological knowledge before their puberty, so as to avoid their inferiority complex and help them get through adolescence smoothly. 1. Why am I so short?

Lin Lin, a junior high school student, won the first place in his class in the final exam, which really made his classmates envy him, but a physical examination at school before the holiday made him very embarrassed. It turned out that the teacher asked everyone to wait in line for the physical examination on the playground. Boys and girls were arranged in the order from short to high. Lin Lin was ranked first as usual. The nurse started the physical examination. The young nurse saw Lin Lin and looked at the girls next to her. She joked, "Hey, everyone is standing in the first row. This boy is so much shorter than the girls next to him. Are you not eating well at ordinary times?" The nurse made a careless joke. What children should know is:

It is normal that many boys are not as tall as girls in adolescence, because girls' height suddenly increases two years earlier than boys'. During the period of 11-13 years old, girls are generally taller than boys of the same age, but by the age of 14-16, boys' height will accelerate, and boys' height will grow faster than girls' and stop growing later, so under normal circumstances,

many boys will find that their limbs will grow rapidly in the middle of adolescence, which seems to be out of harmony with their height, thus becoming very inferior. In fact, in the surge of adolescent height, the growth of upper and lower limbs will be faster than that of spine, while the ratio of sitting height to height will gradually decrease, but this situation will change in the later period of adolescence, when the ratio of children's height to sitting height will reach the normal standard of adults.

So if you notice that your adolescent boy has become inferior because of his short height, you must tell him loudly:

Children, don't be upset or inferior because of this, just walk with your head held high like a man and strengthen physical exercise. In a few years, you can grow into a proud tall man. 2. Why do boys' breasts develop?

Jiang Jiang is a 15-year-old boy. When he got up one morning, he felt a little pain in his chest, and he felt a little lump when he touched it with his hand. He took off his clothes and observed that the color around his nipple was darker than before, and the area of his areola was larger than before. What is the reason? After coming to school, he quietly observed the girls in the class and found that the girls' breasts began to bulge, but the boys' were flat, which showed that the physical development of boys and girls was different, but why did he do this? Let the children know:

We all think that only girls' breasts will begin to develop during adolescence. In fact, boys may also have breast enlargement or development during adolescence, but many boys have this physiological phenomenon and habitually ignore it. After this happens to boys, don't be embarrassed. You must tell your parents in time and let them go to the hospital with you. If it is a normal adolescent development, it generally does not need treatment, and it will disappear on its own within 1-2 years.

At this time, we must tell our children:

Don't worry about this situation. This kind of physical development fully shows that you are slowly growing up, your body is gradually becoming mature, and you are becoming more and more like a real man. 3. Why does my body stink?

Yangyang likes basketball very much. During the summer vacation, Yangyang's mother enrolled her children in a basketball training class. After several days' training, Yangyang quickly learned some new pitching skills. With a developed "sports cell", he felt at home on the basketball court and became stronger. Yangyang also became more and more fond of playing basketball. However, although Yangyang was proud in the sports field, there were some troubles in his life. Two days ago, I asked some classmates to go out to play together. One of the girls covered her nose rudely and said that he smelled bad, and that he didn't care about hygiene and didn't like taking a bath. In fact, this can be wronged Yangyang. Every time he finishes his exercise, he will smell the smell of sweat on his body, but he doesn't care. He takes a shower every day when he goes home, and he specially uses shower gel. When he goes out, he still smells delicious, but the smell comes out as soon as he sweats. Why is this happening? What children should know is:

There are actually two kinds of sweat glands in human skin, one is eccrine gland and the other is apocrine gland. Eccrine glands are distributed in all parts of the body, while apocrine glands are distributed in armpits, around anus and genitals.

When children are young, the apocrine glands don't develop, so naturally they don't produce corresponding secretions. However, after puberty, the apocrine glands begin to develop, and in summer, armpits, hands, feet and genitals are more prone to sweat, so some unpleasant smells will be produced. When people get old, the secretion function of sweat glands will gradually decrease, sweat will be correspondingly reduced, and the unpleasant smell of the body will be much less.

In fact, this situation can also be solved by daily diet and improving personal hygiene. You should do more cleaning, change clothes frequently, wear pure cotton, comfortable and loose breathable clothes, and wear comfortable, light and breathable shoes. You can naturally improve your diet by not eating spicy food, smoking or drinking. 4. Why did the hair suddenly start to flourish?

recently, Hao Hao began to grow some moustaches on his mouth and chin. At first, there were only a few moustaches. He didn't care, but he didn't expect more and more moustaches on his face. In desperation, he had to pull them out one by one with his mother's eyebrow plucking clip. But I didn't expect the beard to grow back just two days after pulling it out. Not only that, some thick hair began to grow in the armpits, legs and private parts of the body. He asked his classmates everywhere if there was any good depilatory cream and wanted to get rid of all the hair on his body. Let children know:

When boys reach the age of 1-14, their beards will grow wildly. At this time, they can shave with a razor, but never use tweezers to clamp their beards, because only the hair shaft and hair root can be pulled out at this time, but the hair balls, papillae and hair follicles can not be pulled out, so they will not only prevent hair growth, but also damage the skin, hair follicles and adjacent limb glands, thus causing bacteria.

The hair on the body begins to flourish, which is one of the characteristics of adolescent physical development. The reason why these body hairs, armpit hairs and pubic hairs flourish is that they represent the secondary sexual characteristics of people and the needs of the body. They can play a role in shielding and protecting the skin and genitals from foreign bacteria and dust.

At this time, we must tell our children that these hairs are the characteristics of male bodybuilding. Just let them grow naturally, which represents their gradual development from "boy" to "man" and is also a unique symbol of men. 5. Why is the voice hoarse?

Jay likes music since he was a child, and he sings very well. He is also the representative of the music class in his class. He usually likes to practice some singles when he has nothing to do, and he always leads the music class.

It's time for music class again. When he got up in the morning, Jay found that something was wrong with his voice, which became a little tight and hoarse. At first, he thought it was a cold, but when he got to school, he chatted with his classmates, and everyone teased him that his voice sounded like Donald Duck. The embarrassed Jay had to keep quiet all morning, and he also excused himself from saying that he had a cold during the music class and did not take the lead. What children should know is:

Every boy aged 12-14 has to go through a physiological voice change stage, which is called "voice change stage" in medicine. During this period, the boy's Adam's apple will become bigger, his vocal cords will become longer, and his voice is generally lower than before, so it sounds a little rough. This is a normal transition period of adolescent voice change and a sign of growth.

At the beginning of the voice change period, the voice may not change much, and it may still be a child's voice when talking and singing, but you will obviously feel that you have lost control of your voice, and sometimes the high notes can't go up and last; In the middle stage, the voice changes obviously, the component of children's voice decreases gradually, the component of adult voice increases gradually, and the tone becomes low and rough; In the late stage of voice change, the voice may become completely like an adult, but for a period of time, it will be difficult to control the tone and the voice will be unstable.

It's very important to protect your voice at this time. Don't make your voice too tired, don't talk too much for a long time, and don't eat spicy and irritating food. It's best not to smoke or drink, do more exercise and enhance your immunity. After the vocal cord development is completed, the voice will naturally calm down and become low and magnetic.

Adolescence marks the boy's transition to a man. During this period, there will be many obvious changes in the boy's physiology and psychology. As parents, they should popularize their children's physiological knowledge, communicate with their children more, know their psychological state in time, help their children to arrange their study and rest reasonably, and supplement their nutrition more, so as to lay a good foundation for their lifelong health.