Polamalu wants his sons to play football

Few in the NFL are more familiar with head injuries these days than Steelers safety Troy Polamalu. Last season, Polamalu left two games because of head trauma. This is only a small portion of his history with concussions. Polamalu reportedly had at least three concussions while at USC and two while playing high school football. But Polamalu wouldn't dissuade his sons from playing football. In fact, he would "absolutely" want them to play the game.