Most of the cardio on this run comes from the heart-pounding terror of impending doom.

Evening jog.

Nothing like a little evening run. Le jogging-du-soir-qui-détend. Music by the masters Noir Désir/ L'homme pressé. #Feiyutech

Posted by Seb Montaz Studio on Sunday, August 9, 2015

I would not do this, but then again, I won't go for a jog on a flat, paved surface. I'm probably not the best judge. Regardless, daredevil and reckless jogging enthusiast ​Sebastien Montaz-Rosset does an excellent job navigating this rocky ridge, surrounded on either sides by loose rocks and steep slopes that would seem to lead to certain broken bones if not certain death. That's kind of his thing, though:

Sources: Sebastien Montaz-Rosset