It's possible that you could break your neck, become paralyzed, and then a quadriplegic. I've known people that it happened to. And they probably didn't go up that far, either, when it happened to them. Better to be safe than sorry. Better to not have regrets when at one moment you were fine and the next paralyzed.

I hope I haven't got you too down on this. I would have been afraid, too, if I were there.