Introduction:<br > Ease on Off the Road<br > We are in the middle of a revolution. Sud-<br > denly， Americans by the millions--gaunt， out of breath， sore-<br > legged~are casting off their costly and fetid sneakers and<br > dropping by the wayside where they lie down， close their eyes，<br > and smile broadly.<br > They are busy discovering the most relaxing new trend to<br > hit the nation since Prohibition ended : not running.<br > After months or years of strenuous overexertion， people are<br > beginning to ask why. Why drive yourself to the point of ex-<br >haustion? Why pound your feet to bloody stumps? Why pre-<br > tend pain is good for you? Why terrorize entire communities<br >by thundering around the streets in massive， unruly， grunting<br >herds?<br > Why run?<br > Instead， why not not run?<br > Today， non-running is America s slowest but steadiest-grow.<br >ing pastime. The Bureau of Sedentary Activity estimates that<br >there are more than 180 million non-runners in the United<br > xiii<br >