American runners have never been slower, a new report says — but why? - Chicago Tribune


Chicago Tribune

American runners have never been slower, a new report says — but why?
Chicago Tribune
Mayo Clinic health and endurance expert Michael Joyner has been following marathon trends for more than 40 years. He notes several reasons for slowing marathon times. First, most runners no longer aspire to performance goals, as they did in the 1970s ...

and more »


from health trends - Google News http://ift.tt/2vln5kU
via IFTTT

Comments