Brock was an amateur wrestler before he ever went to WWE he has alot of credibility when it comes to fighting imo seeing as he's a former NCAA champion. His training is intense and anyone who calls his size to be caused by roid's should see his training. The guy runs with a friggan tree thats about 2 feet in diameter and like 10 feet long on his shoulder. And for miles. you tell me who can manhandle a tree like that and not be huge.