While it sounds relatively simple (because it is), it is taxing for the muscle(s) being used. They are moved into the correct position, they contract, and then they hold that tension for several seconds up to minutes, wearing out the targeted muscles. While doing these exercises, a specific muscle, or muscle group, is targeted and contracted. ![]() They don’t get any longer, and they don’t get any shorter because no motion is taking place. That is to say that during these exercises, the muscles involved stay the same length. ![]() To get a little more specific, the word “isometric” literally means “same metric”.
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