PTH (mathematics)

Race #6

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Official speed 29.14 wpm (80.30 seconds elapsed during race)
Race Start April 15, 2015 5:04:09am UTC
Race Finish April 15, 2015 5:05:29am UTC
Outcome No win (2 of 3)
Accuracy 90.0%
Points 0.00
Text #409 (Length: 195 characters)

There are two kinds of fibers in our muscles, red and white. Red muscle fibers enable us to maintain long-term, low stress activity. White muscle fibers are specialized for fast, rapid movements.