About the series

    Human to Hero

    Human to Hero gets to the heart of what it takes to be a sporting star, exploring the discipline, dedication and determination involved, as well as the sources of inspiration for the world's best athletes.

    Watch every Wednesday at 12:30, 13:45, 15:45, 23:45 and Thursday at 05:35 (All times GMT). Read about CNN's special reports policy


  • Wladimir Klitschko of Ukraine in action during the IBF heavy weight title fight between Wladimir Klitschkoat and Kubrat Pulev at O2 World Hamburg on November 15, 2014 in Hamburg, Germany. (Photo by Martin Rose/Bongarts/Getty Images)

    Up next ... Wladimir Klitschko

    The world heavyweight boxing champion reveals his journey from Soviet-era Kazakhstan to dominating the ring for the past decade along with his older brother Vitali. "We are very competitive. It's something that we have in our blood. We promised our mother not to fight each other," says the 39-year-old Ukrainian, who has 63 wins from 66 career pro fights. "My life motto is: Failure is not an option."