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Tag: Interval

The newly coined “Fultzy 400s” session is designed to give you an insight into your half-marathon potential. But does it work? BY RICK PEARSON Matt Lincoln//Getty Images You...
Learn more about this metric—and specific workouts to improve it. Edwin Tan//Getty Images Running at the best of your ability is somewhat of a numbers game....
There's no formula to use, and you may need longer jogging or walking breaks as the workout goes on to continue running hard.