Running yourself into thyroid troubles ?

A few years ago we wrote about this:
“Are you running yourself into hormonal problems?”
here is the link: http://thegaitguys.tumblr.com/…/are-you-running-yourself-in…

Well, there has been some new research and one of our fav authors has brought things to present day research. Here is what Alex Hutchinson has to say and share with us all over as Sweat Science.

http://www.runnersworld.com/health/endurance-training-and-thyroid-function