Dude the injuries wrestlers suffer DO NOT COMPARE to mma. Wrestlers are constantly getting injured. And CTE is an eventuality for them too. Getting slammed and jumping from the top rope and all that stuff is bad for their bodies and brain. When they have injuries they can take pain killers AND PED's to recover. So it stands to reason that wrestlers can go so longer than fighters who actually deal with commissions and can't be drugged up in the ring. And you do understand that it's not real competition when you're a wrestler right? It's a show. Of course you can do a show well into your 40's 50's.