Dean Karnazes is a Speaker, Bestselling Author, Athlete, and Entrepreneur. TIME magazine named Dean Karnazes as one of the "Top 100 Most Influential People in the World." Men's Fitness hailed him as one of the fittest men on the planet. An internationally recognized endurance athlete and NY Times bestselling author, Dean has pushed his body and mind to inconceivable limits. Among his many accomplishments, he has run 350 continuous miles, foregoing sleep for three nights. He's run across Death Valley in 120-degree temperatures, and he's run a marathon to the South Pole in negative 40 degrees. On ten different occasions, he's run a 200-mile relay race solo, racing alongside teams of twelve.