Why You Should Exercise Outside

According a recent article in the New York Times, Gretchen Reynolds argues that the benefits of exercising outdoors far exceed those of working out in a gym:

“While the allure of the gym — climate-controlled, convenient and predictable — is obvious, especially in winter, emerging science suggests there are benefits to exercising outdoors that can’t be replicated on a treadmill, a recumbent bicycle or a track.”
Hmn,  I wonder how working out outside might help with what Richard Louv has coined “nature deficit disorder”?
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