garrett harper to the goal line, to the end zone. that's a shiloh christian touchdown. >> i'm not going to, like, think about what could happen, because there's so many things out there that everyone says, like, this could happen if you do that, you know? so, like, why... why worry about that? >> whenever you start playing the game you know that there's a chance you could get a concussion. ( whistle blows ) even if you do, it's... usually, it's not life threatening or anything like that. it says it can shorten your life, but it won't shorten it, like, that much. and you only live once, so might as well have fun while you're living. >> you're only 17 once. i mean, i have the rest of my life to worry about pain and... and stuff like that. i can only, you know, play football for so long. i might as well, you know, use the time i have and worry about the effects later. >> the game's about toughness. and that's part of the bonding and that's part of the learning experience, particularly in the heat of a game, you know, when your friends a