There is a movie that's been out a few years called : The Wrestler with Mickey Rourke. You should watch it as it gives all the insights as to how phony those wrestling matches are. Big joke !
What will star of WWE probably physically suffer except concussion?
WWE is as fake as it comes, those people are trained in what they do....that being said, what they do is physical with the very real possibility of injury.
"Probably" ... Nothing. It's all fake, and they are trained how to take falls/get hit. There even used to be a TV show, where contestants would take the training to become WWE "actors".