and they just said when you come back in a few days, you'll be fine, and take these pills, called kepra, and they said as long as you take your medicine you'll be allowed to play, but they still kept going on throughout my career. >> he had head injury after head injury after head injury. and every time, he was involved in situations where the coaches didn't pull him out of the game, and he was put back in the game. his own father pulled him off on the sidelines and said 'adrian, are you ok?' didn't even recognize him. he was still ready to go back in and play. >> were the coaches going to put you back in the game? >> mm-hm, they were going to put me back in the game and my dad had to come from the bleachers they say and tell them not to put me back in the game. >> that's how impaired he was. and that happened a few too many times. >> when arrington played, the ncaa had no specific "return to play" rule requiring schools to keep players with concussions on the sidelines. >> it takes at least 3-4 hours it's said, for the symptoms of a concussion to heal, and often times much more than th