VIDEO: Mike Tyson Trains Justin Bieber To Box

06/05/2012

Justin Bieber is expanding his horizons lately, boxing with Mike Tyson, the former undisputed heavyweight champion of the world. Teenage heartthrob Bieber, 18, may have developed a love of boxing. He was spotted buddying up to Floyd Mayweather after his Las Vegas victory last month, and now he's taking lessons from Tyson, 45, who once bit off Evander Holyfield's ear in the ring.