A global environmental crisis makes the survival of human beings dangerous externally. Moreover, recently, it is warned that the inner environment of human beings, namely, physical fitness raises crisis inside our bodies. Although physical fitness is discussed and set as an object of policies here and there now, the concept of physical fitness itself is still indefinite. Even though the body theory has been a boom, physical fitness has never been examined as a social science. So far physical fitness is defined as "the physical capability which suppports the basis of various human activities." Therefore, physical fitness differs individually by an age stage, and sex difference, physique difference and also occupations. Moreover, there are two dimensions in physical fitness. They are the "defensive physical fitness" which implies resistance, and the other is "active physical fitness" which implies more active power. The latter connotes the former, it is pointed out that not only the latter but also the former of children are made vulnerable. The fall of active physical fitness of the adults is shown by the increase of metabolic syndrome, diabetes and other lifestyle-related diseases, etc. They are depend on two causes, the one is over-taken calorie beyond necessity, and the other is the calorie consumption below necessity.
The history of human beings formed as an example “ingestion = consumption 2200 Kcal” as a biological law.The history means “little ingestion: excessive consumption” of calorie, that is, the deficient state has been constantly experienced in long history. As a part of educaton to make nations, a cultivaton of physical fitness of the whole people became a national policy subject in a new nation-state. Even though, “little ingestion: excessive consumption” of calori had been still fundamental. However, in the advanced nations which accomplished high economic growth, “excessive ingestion: little consumption” of carolie balance has replaced the former deficient state, and caused a new crisis. Of course, they are ruled by a social structure.
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