 Biking, fall off the bike, hurt themselves. I was reading this guy's book, and he's got all kinds of those long-term injuries. They just don't heal right. But you did it because you were out there trying to do too much. You're at the edge. You were a thrill seeker and not an exerciser. There's a difference. And, you know, you can enjoy sports, get in shape, stretch out, warm up, go out, play at your level of reality.