Demetrious Johnson revealed why he decided to hang up his gloves. Former UFC flyweight champion Johnson (25-4-1), who defended the title 11 times, announced his retirement from MMA this past week. He retired as the ONE Championship flyweight (135 pounds) title holder. “Mighty Mouse” explains that he’s reached a point where he gets more fulfillment in training with random athletes from his era than continuing to fight in MMA
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