Every one of us must have done some sort of exercise at least once in our life. Have you ever gone beyond this story? What we meant is that, have you ever put an effort to study the enormous offstage preparations taking place underneath our skin to make it happen. I don't think many of you will give a "yes" nod to the above question. Let us use a little time to go beyond the skin and we are sure that you will give a cheerful pat to your own muscles on knowing these secrets (at least to you). Physical exercises are made possible by means of forces effectuated by the voluntary muscles of the body acting through the lever systems of the skeleton.

If you happened to be in a gym or bodywork station, you might end up with reading certain terms, which explain the maximum possible force or extension of that particular equipment. Many manufacturers of exercise equipment in the United States who continue to use the antiquated English System of measurement. Among two hundred nations of the world, the United States is the only country that continues to employ the English System (as a matter of fact, even England abandoned this system a number of years ago). Other than United States, an International System (SI) is universally accepted for measurement in the world of science and in everyday life. The basic units in use to measure the force, work, and power of exercise are Newton (N), joules (J), and watts (W), respectively.