"It makes little difference how fast you can run the 100 meters when the race is 400 meters long. Life is not a sprint; it is a distance run, and it demands the kind of conditioning that enables people to go the distance."--Gordon MacDonald Running Strong Whose heart doesn't leap at the sight of a beautifullyconditioned runner, effortlessly gliding along, stride-bystride, mile-by-mile? And what runner gets to this...