There were many other "isometric" courses available at the time, and sales took off only after Atlas used an advertisement depicting a bully kicking sand in a weakling's face. The story may be apocryphal, but it captures the essence of Atlas's innovation. Tiger keep in physical condition? Did you ever see a tiger with a barbell?" He concluded that lions and tigers became strong by pitting muscle against muscle. He said that one day he watched a tiger stretching in the zoo and asked himself, "How does Mr. History Īfter being bullied as a child, Charles Atlas joined the YMCA and began to do numerous exercise routines. Instead, the method comprises a combination of exercises in three disciplines: isotonic, isokinetic, and some exercises in the isometric discipline.Ĭharles Atlas Ltd., which Atlas incorporated in 1929, owns the trademark for Dynamic Tension. Dynamic Tension exercises are not merely isometrics, since they call for movement. The practitioner tenses the muscles of a given body part and then moves the body part against the tension as if a heavy weight were being lifted. "Dynamic Tension" is the name Charles Atlas gave to the system of physical exercises that he first popularized in the 1920s.ĭynamic Tension is a self-resistance exercise method which pits muscle against muscle. Please help improve this article by introducing citations to additional sources. Relevant discussion may be found on the talk page. This article relies largely or entirely on a single source.
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