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TMZ Sports recently caught up with John Cena to discuss the possibility of donating his brain after his death for concussion research. While former wrestlers, like Kevin Nash, Rob Van Dam and Mick Foley, have already confirmed that they would make the donation in an effort to better understand chronic traumatic encephalopathy, or CTE, Cena is admitting to being open to the idea, saying, "If I could do something after I exist to help the existence of mankind to come, yeah, I think I might."

On a much lighter note, Cena was also asked about Justin Bieber getting into the ring in the future. We'll let him take it from here. 

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[via TMZ Sports]