Injury seems most likely....maybe taken buckles to the chest instead of turning around (they do NOT move) and front bumps could be direct flat fall from way up on chest and repeated chops, if done hard enough and not on the outside of chest may not help. Either way, the guy is good to go at 45 or any age for that matter, but I still think he would have maintained more athleticism if he just stayed where he was in WCW (as tag with bro) without totally blowing up.