Mike Tyson's Epic Workout Routine- a true BEAST!!!

http://www.muscleprodigy.com/mike-tyson-workout-and-boxing-routine-arcl-984.html Tyson had a pretty interesting workout routine. However, don't you think all that training he did (I mean he did it 7 days a week) could lead to a little over-training? I think the most effective boxers need to a day off and I think so much hard work may of led to his downfall.