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Allen, who also has studied jujitsu, called his indoctrination into the sport "humbling" and said...
Allen, who also has studied jujitsu, called his indoctrination into the sport "humbling" and said it took two years for him to learn how to properly throw a punch. The benefits, however, were profound. He lost 25 pounds and dramatically improved his conditioning before his final season with the Kansas City Chiefs.
"You’re not going to find better cardio, I swear to you," he said.
