Usain Bolt ’s legacy is defined by his unmatched dominance in sprinting, holding world records in the 100m, 200m, and 4X100m relay that still stand, along with eight Olympic gold medals and 11 World Championship titles, making Bolt the most successful male athlete at the World Championships and the only man to win the 100m and 200m at three consecutive Olympics .

The Jamaican’s next race, however, is versus Father Time and the natural effects of aging.

After inuring his Achilles last year, Bolt, 39, says he no longer runs, and often runs “out of breath.”

“I mostly do gym workouts,” Bolt told the media at the World Athletic Championships on Sunday. “I’m not a fan, but I think now that I’ve been out for a while, I have to actually start running because, when I walk up stairs, I get

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