The 4-treadmill male model workout

BOULDER - He's the kind of guy who scoffs at that warning given to mere mortals right before they're about to step off the moving escalator.

Ask him to walk and chew gum at the same time, and he'll do it while skipping from one treadmill to another and on to one other.

Quite frankly, Joshua Marable is an accident waiting to happen. Yet, for some reason, he makes it all look astonishingly easy.

Read more here.