Named by TIME magazine as one of the “100 Most Influential People in the World,” endurance athlete Dean Karnazes has pushed his body and mind to inconceivable limits. His feats include winning the World’s Toughest Footrace - the Badwater Ultramarathon - and running 50 marathons in all 50 US states in 50 consecutive days. Dean is also the New York Times bestselling author of “Ultramarathon Man: Confessions of an All-Night Runner.”