“No boxer in the history of boxing has had Parkinson's. There's no injury in my brain that suggests that the illness came from boxing.”

American professional boxer and activist

Muhammad Ali was an American professional boxer and activist. He became a global cultural figure and was widely known as “the Greatest”. He held the Ring magazine heavyweight title from 1964 to 1970, was the undisputed champion from 1974 to 1978, and was the WBA and Ring heavyweight champion from 1978 to 1979. In 1999, Sports Illustrated named him Sportsman of the Century, and the BBC named him Sports Personality of the Century.