Sactio (tyo007)

Race #185

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Official speed 109.57 wpm (37.13 seconds elapsed during race)
Race Start February 26, 2013 10:10:11am UTC
Race Finish February 26, 2013 10:10:48am UTC
Outcome Win (1 of 5)
Accuracy 99.0%
Points 0.00
Text #408 (Length: 339 characters)

There are two kinds of fibers in our muscles, red and white. When an athlete trains for long distance running, he or she builds more red muscle fibers than white muscle fibers in his calf muscles. A sprinter has more white muscles. If you retrain a marathon runner to be a sprinter, most of the muscle fibers will convert to white muscles.