I think my next 30 day challenge will be this interval workout: http://www.runnersworld.com/peak-performance/new-workout-the-30-20-10-produces-impressive-results … Only 10 second sprints, but still promising results.
Replying to @pkedrosky
@pkedrosky very cool. I live Gretchen Reynolds' book, btw.
1:35 PM - 30 Jul 2015
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