I would have discouraged football, but S had no interest. Both my kids played hockey through high school, but if either of them had gotten a concussion I probably would’ve had them quit. There was one boy on my son’s team that had had 4. That’s just crazy. Ironically DD did have a concussion - she got it sliding down a slip and slide while she was sitting down. So yeah accidents can happen while doing pretty much anything. She also dislocated her elbow tripping over a toy in her room.