1. CM Punk
If there is one guy more resilient in WWE than John Cena, it' s CM Punk. And that is no easy feat. But the truth is that CM Punk is a warrior. While Cena's gimmick dictates that he remind everyone of just how tough he is and how hard he fights, Punk is proving it each and every time he steps into the ring. This is especially true right now, as internet buzz is that he's currently suffering with cracked ribs. This does not surprise me in the least, to be honest. The fact is that Punk was perhaps the most active WWE champion since Shawn Michaels; Punk was wrestling on TV nearly every single week. He gave fans their money's worth and he did it all with that cynical smile on his face. Despite how brutally honest he is or how difficult he can be up close and personal, the truth is that Punk is still a fan at heart. He remembers what life was like before WWE and when you combine that with the passion he has for the business, Punk is a guy who has remained very grounded. And this what he wants to do. This is all he ever wanted and unless he suffers a serious injury that requires surgery, then I believe CM Punk will just keep taking the beatings, keep suffering from pain and just ask for more.