Zack Kemmerer is unexpectedly chipper and doesn’t seem bummed at all that viewers have yet to see him full-on conquer the American Ninja Warrior course.Nor does he feel any awkwardness about attending his own watch party for the extreme athletic challenge — even though he barely appears in the season opening episode his fans gathered to view at Union South.Kemmerer, a Ph.D. student in UW-Madison’s biochemistry program studying mitochondria (the powerhouse of the cell!), says most of his run on the show, which opened its season on June 13, wasn’t just challenging — it was actually fun.
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