But our body does not unconditionally grow with age. It is closely related to the inheritance, nutrition, environment, sleep, etc. Under the above conditions, the strict physical exercise using electronic stopwatch is to promote the growth and development A very important factor, because regular coaches use advanced stopwatch physical activity
A person from embryos to infants, children, adolescents, adulthood, is the process of continuous growth and development of the body. What is growth and development? Growth refers to the increase in volume and weight of each part of the body, development refers to the various parts of the body structure and function from simple to complex changes in the process.
Junior high school is an important turning point in the development of body and mind during the whole life. In the junior high school stage, body shape and physiology will enter the peak period of development. There have been many unprecedented changes in both physical and psychological aspects and have obviously grown older. The most effective and active means of promoting physical and mental health during this period is physical exercise. In the strict physical exercise by using the , you will try to exercise the pleasure, the competitive limit of stimulation, the joy of cooperation, to experience the courage and tenacious, victory and defeat, frustration and courage, hard work and success and the excitement and Happy, and will actually feel the use of stopwatch timing exercise of physical activity of various organs and systems to promote the role of system. Regular physical exercise can promote physical growth and development, so that height growth, weight gain, respiratory function and cardiac function; also adjust the flexibility of nerve activity, physical exercise to enhance physical and mental activity. In short, the use of physical exercise can not only get a healthy body, but also get the psychological satisfaction and psychological quality and social adaptation ability to promote physical and mental health development.
Junior high school students are the period of strong growth and development of the body, therefore, we must understand the laws and characteristics of their own growth and development.
First from the appearance of growth point of view, from infants to adulthood, the first to grow twice as long trunk to grow three times the upper limb to grow four times the lower limbs to grow five times. Relatively speaking, children's head is relatively large, relatively short limbs. When in junior high school, the size of a person's head is approaching that of an adult, and the next (junior high school) is mainly height, weight, bust and limbs.
But our body does not unconditionally grow with age. It is closely related to the inheritance, nutrition, environment, sleep, etc. Under the above conditions, the strict physical exercise using electronic is to promote the growth and development A very important factor, because regular coaches use advanced physical activity, the growth and development of various organs of the body can play a positive role in promoting.