Have longer and more succesfull careers. Here are list of some some fighters who were all clean living and gym rats and still going strong late in there career
Bernard Hopkins
Glen Johnson
George Foreman
Nate Campbell
Johnny Nelson
Anthony Mundine
Antonio Tarver
Tony Thompson
Lennox Lewis
Vitali Klitschko
Ron Lyle
Wladmir Klitscko
Archie Moore
Danny Green
Sven Ottke
Virgil Hill
Audley Harrison
Evander Holyfield
Bernard Hopkins
Glen Johnson
George Foreman
Nate Campbell
Johnny Nelson
Anthony Mundine
Antonio Tarver
Tony Thompson
Lennox Lewis
Vitali Klitschko
Ron Lyle
Wladmir Klitscko
Archie Moore
Danny Green
Sven Ottke
Virgil Hill
Audley Harrison
Evander Holyfield
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