2. Educational theory: Early education is dominated by various labor movements.
3. Military theory: War improves soldiers' combat skills and physical fitness.
4. Religious theory: Religious activities seek the explanation of nature in the form of body movements.
5. Physiology: The surplus labor and energy make him qualified to engage in sports activities.
6. Psychological theory: express different psychological emotions through body movements.
7. What needs to be said is that the various needs of human beings in social life have sprouted sports.
The origin of fitness:
Fitness originated in ancient Greece 19. Because of the constant wars in ancient Greece at that time, in order to improve soldiers' muscle strength, they had the initial simple fitness equipment and fitness knowledge. Ketone art also originated in Greece. Later, people began to pay attention to the shape of muscles, and fitness was widely popularized in the United States.
Eugene Hill Road paid attention to his muscle lines, and later toured around to publicize it, and people gradually became interested in fitness.