Source: has a Q&A with John Cena, who was promoting this Sunday's Royal Rumble pay-per-view. During the interview, Cena was asked who he was rooting for in the CM Punk - Rock title match this Sunday.

"I'm torn," Cena admitted. "CM Punk has been the champion for quite a long time now, but I know from my past instances with Dwayne Johnson that he's very difficult to beat."

Cena also admitted that grudges carry over outside of the ring "a lot more than people would think."

Cena also gave his opinion on The Royal Rumble match, if he changes his training for it, how he stays grounded and much more. You can read the full interview by clicking here.

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