Some sport are dangerous like football teen's get a lot in football with broken arms and legs. The biggest problem with is the head tramas teen's could get from it from getting there head slammed and hit a lot. Sococer is another sport for broken bones, but teen's do play sport to get a futur like getting a scolorship from being good at it or for playing for so long so parent let them for that reason. Some parents don't because of the fear of there child getting hurt or killed from something that happened. It also stop the teen brain from fully devolping if they get hurt in a way
I think that cringe means that a response to embarrasement. But right now in this text I think this word means that they didn't want that to happen. Or they thought that was not good. Hopefully it's right. I mean that's just my opinion. :D