Mike Tyson
Former Heavyweight Champion, Mike Tyson has had a tumultuous life, and career — I mean who could forget when he bit off Evander Holyfield’s ear. Tyson retired from boxing and for a while he seemed to have retired from his workout routine as well. In 2009, the then 42-year-old showed up at an awards show looking a lot pudgier than normal.
People were shocked and Tyson clearly took notice of the comments, after switching to a vegan diet and staying vigilant with his workout routine, the former boxer lost 140 pounds, going from 380 to 240 pounds.