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1. Due to excessive exercise. A lot of research issue: who was living a protege period, childhood Ceng Yinao get parents encourage people, has been in physical education classes in school or the people who were fit teaching, more easily than people do not have the qualifications mentioned above to refine. Visible early refined resume to deal with people engaged in sports tests is very nervous. So in order to increase the adult refined dentition, must grab from children and adolescents, increase its refined resume and create interest in their activities.

2. Gap time of dynamic and static. Research on the issue, people be fond of calm in leisure time than active people are more likely to exit the refined.

3. The current fitness level. Is most of the studies did not invent the fit and available to insist to take exercise, the relationship between the issue, but there are also some research of exercisers often not timing out of the physical exercise field, and these people are also often than strong people are more likely to choose fitness as a way of resurrection.

4. Smoking and don't smoke. Nearly all the research of the issue, smokers are more likely than non-smokers to exit the physical tests. A study issue: smokers often are more likely than non-smokers to within the first few weeks of refined present exit, and it is not the number of smokers quit refined 2.46 times.

5. Other factors. Age, gender, marital status, educational level, income, occupation characteristics, nature, characteristics, attitudes, and so on, all have probably become the influence factors of refined.

Each factor probably doesn't apply to independent people confrontation is refined. Therefore, we treat these formal factors. To insist on physical exercise behavior is often the effect of the effect of multiple factors.

Ps: to test physical exercise will have the following benefits!

1, physical exercise is beneficial to the growth of human bones, muscles, enhance the cardiopulmonary function, improve blood circulation system, respiratory system, the function of the digestive system condition, is conducive to the growth and development of the human body, and improve the disease resistance, enhance the organism's ability to adapt.

2. Reduce after children in adult heart disease, high blood pressure, diabetes and other diseases.

3, physical exercise is one of the most positive and effective means of enhanced physique.

4, can reduce your risk of premature into ageing.

5, physical exercise can improve the regulating function of the nervous system, improve the nervous system of human activities is complicated changes of judgement, and make timely, accurate, quick response and coordination; Make human body to adapt to the changes in internal and external environment, maintain the body ? of life activities