"Train at the same pace day after day, week after week, year after year, and that’s the kind of running the body adapts to. But break out of that comfort zone with a little speedwork now and then, and the body will learn to deal with the new demands."
- Don KardongThis wise statement was provided by the successful American long-distance runner Don Kardong, who shared his knowledge of training. Kardong, a famous marathon runner who was born in 1948, was the first American to finish the New York City Marathon and won the Boston Marathon. Think of your body as a…