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Physical activity and heart.

I am receiving many letters with the request to tell about the impact of sport and physical education at heart. However, pondering this topic, I found it necessary to expand the scope of our conversation and to discuss the impact of exercise in General. In fact, you see, sometimes physical labor in the garden of exhausting not less than a good workout, however, say, Olympic sports, this activity will be included, probably not soon.

Thus, we will consider the question broadly, but do not forget about sport. So, for readability, we highlight three types of physical activity:

static, in which there is continuous strain of muscle groups (for example, forced working posture in which you have to spend a certain time), dynamic when in groups of muscles alternating tension and relaxation (e.g., walking, running, swimming) and “explosive”, characterized by very strong and short-term muscle tension (for example, lifts Continue reading

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