by Matt Fitzgerald, Published Jan. 13, 2014, Updated Jan. 18, 2016 at 12:25 PM UTC
A low-tech tool for exercise prescription isn’t just for beginners anymore.
by Matt Fitzgerald, Published Oct. 16, 2013
Labored breathing is very familiar to runners.
by Matt Fitzgerald, Published Oct. 15, 2013
There are many ingredients in the recipe of running fitness.
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