why does a person standing for a long time get tired when he does not appear to be doing any work
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As he utilizes the muscular force, His internal energy is used up, so a person standing for a long time get tired thought he does not appear to do any work as he is not moving.
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As he utilizes the muscular force, His internal energy is used up, so a person standing for a long time get tired thought he does not appear to do any work as he is not moving..
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