I tend to put a helmet on and bang my head against the wall – not ridiculous crazy hard – to see how it works. I’ve felt fine.
— 

Ravens linebacker Sergio Kindle (via Ravens Insider), who missed all of last season with a fractured skull after falling down the stairs. 

He’s supposed to get further testing soon to see if he can finally resume contact drills seven months after breaking his head, but I don’t know, maybe if he stopped hitting his head against the wall it would heal faster. Just saying.