rest or easy day.Run Around RacesPrior to an afternoon race, a 15-minute morning jog can   iron out travel kinks and flush muscles with blood, which enhances flexibility. After a morning race, an easy afternoon or evening run of between 15 and 30

and 10,000m. Last year, the Ethiopian competed in two 10,000m events. He won both. But from May to September, he entered only six other races. You'd think a guy who makes his living by running would step to the line as often as possible, but Bekele

The fastest races are run with even splits: world records reveal that, statistically, fast, steady speed yields the best performances. Yet some races demand a tactical rather than  time-trial approach, where occasional and well-timed bursts of speed

. The key is knowing when to surge. Below, I've outlined six surging strategies, and weighed the risks and benefits of each. Check them out, and give one a try the next time you're in a race.At The Start Some runners believe they can run as hard