<br >"Anyone who enters athletics，" says Dr. Otto Brucker，<br >"announces indirectly that he is not interested in neglect-<br >ing his body." This is true of even the casual athlete， and<br >there are an estimated 87.5 million of those in America，<br >not counting kids.<br > Of that number， eight million jog， twenty-nine million<br >play tennis， fifty thousand are racquetball regulars， and<br >almost half a million paddle on the paddle courts.<br > There are nearly fifteen million men .and women over<br >the age of 20 riding bikes these clays and nearly forty-six<br >million walking for health and recreation.<br > More than seven million adult Americans are downhill<br >skiers， and uncounted numbers of us have also discovered<br >the joys of skating， cross-country skiing， and the ball<br >Ilmrts， including handball， volleyball， softball， and golf.<br ><br >