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Show Few People Use Muscles Enough can handle more than 4(1 pounds. There Is an Increase from a 2Vpiiirid pull to more than a 40 pound pull slm ply by a btl'lzatlon of the knowledge of how the arm muscles and bones work as mechanical levers and forces Practically every one has from 10 to 20 per cent more muscular strength than he Is trained to use, Donald A. I.alrd says In sn article in Hygela, the health magnzlne pahllshed by the American Medical association. Tuke the simple matter ot lifting a heavy weight above the bead with one hand fot example. If a person under Islands how to use his muscles the amount that cud be raised can be ul most doubled. Suppose that when the arm Is hanging at the side 26 pounds is the maximum that can be raised by bending the arm at the elbow. As soon as the forearm Is raised so that It Is at right angles with tbe upper arm the weight Is handled much more easily. When the rmnd carrying the weight is fun tier raised no thnt It Is almost on a level Willi the shoulder the same niusi lin lime mi added udvantage and |