The Runner's Rule Book: Everything a Runner Needs to Know--And Then Some (Runner's World)Every sport has rules. Running is no exception. If you're curious, just visit the Web site of USA Track & Field, the sport's governing body, where you'll find detailed dictates on everything from disqualification to bib number placement to the caliber of the starter's pistol. But what about the everyday rules of running? The unspoken ones that pertain to the lingo, behavior, and etiquette that every seasoned runner seems to know and every newbie needs