At 5 a.m. the only light out-side is the neon haze hovering over the nearby Vegas strip. Mike Tyson fairly bounds through the gates of his sprawling estate on the hilly outskirts of the city and takes off into the darkness. The daily 10- to 15-mile run begins a relentless, even manic, regimen of road and gym work—interrupted by little other than meals and Islamic prayers—that can stretch more than a dozen hours. "This is the hungriest he's been in a long time," says Tyson comanager Rory Holloway of his fighter's bid to win back the heavyweight title from Evander Holyfield. "I would never say a loss is good, but Mike needed a challenge."
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