LONG BEFORE THE INVENTION OF CEILINGS AND WALLS, man roamed the earth feeling happy and healthy and free. Yet he longed for something more. And so man began to change his world, and he built condos and frozen yogurt stands and variable-speed computerized treadmills, until one day he realized these were not the things he had longed for all those years ago. What he had longed for was something to cushion and protect his feet while he was hightailing it through the woods. And so man began wearing outdoor cross training shoes by Nike. Fortunately, he had only been building things for two million years, so there were still plenty of places to roam. Th« Air Mowabb, an outdoor croaa training aka* I Nika-Air* cuahioning. For brochura call l#00-«82 736S (In tha U.8. aatjr).