za (muggle)

Race #2

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Official speed 33.26 wpm (122.31 seconds elapsed during race)
Race Start March 10, 2017 10:06:05am UTC
Race Finish March 10, 2017 10:08:07am UTC
Outcome No win (4 of 5)
Accuracy 92.0%
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.