A phys-ed movement that focuses on fitness rather than competitive sports seems to be spreading fast. Phil Lawler, a junior high phys-ed instructor who's the "guru" of the new model, says he grades students based on heart-rate zones. "I now can have a child literally running a six-minute mile at this age, and a 14-minute mile, and each child will get the same grade based on the number of minutes they put in their zone," says Lawler. (CNN.com)