Runners know that speed is everything. It seperates the record breakers from the casual joggers. If you are not the fastest person in the world, there are always steps you can take to improve.
(Click on graphic for larger view.)
Runners know that speed is everything. It seperates the record breakers from the casual joggers. If you are not the fastest person in the world, there are always steps you can take to improve.
(Click on graphic for larger view.)
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