Duc (maitheduc2002)

Race #99

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Official speed 34.68 wpm (117.30 seconds elapsed during race)
Race Start July 3, 2021 6:41:42am UTC
Race Finish July 3, 2021 6:43:39am UTC
Outcome No win (2 of 5)
Accuracy 95.0%
Points 35.84
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.