Adolescence is the maturity of individual physiological development. Mainly as follows:

① Growth and development morphology. The age of complete maturity of morphological growth and development is about 22 years old. At this time, the height and sitting height reach the maximum.

② Physiological function. The pulse rate gradually slows down with age, and tends to be stable from 18 to 19. /kloc-pulse frequency of urban youth aged 0/8 ~ 25: 75.2 beats/min for males and 77.5 beats/min for females.

Lung capacity increases with age. The growth of male adolescents accelerates from 12 to 13, and tends to be stable from 19 to 20. 18 ~ 25 years old, the average vital capacity of urban young men is 4 124 ml, while that of young women is much smaller, with an average of only 287 1 ml.

③ Physical quality. The physical fitness index of adolescents in China, the peak of male development is 19 ~ 22 years old, and it decreases slowly after 23 years old, which is a single peak type; The 1 peak of women's development appears at1~14 years old,17 years old tends to stagnate or decline, and rises after 18 years old, and the second development peak appears at/kloc-8 years old.

④ The characteristics of adolescence. The secondary sexual characteristics of adolescence, both men and women develop at the age of 19 ~ 20.

⑤ Brain development. After entering adolescence, the development of the brain has matured in shape and function.

Second, psychological characteristics

Psychologists' standard description of college students' mental health is as follows:

(1) has a moderate sense of security and self-esteem, and has a sense of value for self-achievement.

(2) Moderate self-criticism, don't brag too much, and don't be too hard on yourself.

In daily life, he has moderate initiative and is not affected by the environment.

Rational, realistic, objective, good contact with reality, able to tolerate setbacks in life, without excessive fantasy.

⑤ Moderately accept personal needs and have the ability to meet such needs.

⑥ Have self-knowledge, know your own motivation and purpose, and be able to make an objective estimate of your own ability.

All landowners can maintain the integrity and harmony of personality, personal values can adapt to social standards, and can concentrate on their own work.

Have realistic goals in life.

Pet-name ruby have the ability to learn from experience, can adapt to the needs of the environment to change yourself.

Attending to have good interpersonal relationships, the ability to love and be loved. On the premise of not violating social norms, I can keep my personality, neither too flattering nor too seeking social recognition. I have my own independent opinions and criteria for judging right and wrong.

Extended data:

Theoretical research and practice have proved that man is the unity of physiology, psychology and society. Man is not only an organism, but also a complete person with complex psychological activities and living in a certain social environment.

The World Health Organization (WHO) puts forward that health is a state of perfect physical, psychological and social adaptation, not just the absence of disease, and people get rid of the weak state. And further points out the new concept of health:

First, I am full of energy and can undertake my daily work and life without feeling tired and nervous; Second, be positive and optimistic, be brave in taking responsibility and be open-minded; Third, energetic, emotionally stable, good at rest and good sleep; Fourth, strong self-control ability, good at eliminating interference; Fifth, it has strong adaptability and can adapt to various changes in the external environment;

Sixth, the weight is appropriate and the figure is well-proportioned; Seventh, the teeth are clean, without tooth decay, pain and bleeding; Eight is that the hair is shiny and there is no dandruff; Nine, the reaction is intense, the eyes are bright and the eyelids are not inflamed; Ten is that muscles and skin are elastic and the pace is relaxed. Therefore, health is the unity of physical health and mental health, which are interrelated and inseparable.

When people's physiology produces diseases, their psychology will inevitably be affected, which will lead to depression, irritability and anger, and then lead to psychological discomfort; Similarly, people with long-term depression, heavy mental burden and anxiety are also prone to physical discomfort. Therefore, a sound spirit and a healthy body are interdependent and mutually reinforcing.

Baidu encyclopedia-adolescence

Baidu Encyclopedia-Mental Health of College Students