5 reasons why John Cena could retire in 2020

#2 Injuries

Injuries have played a big role in Cena's career

John Cena has suffered from: a torn pectoral muscle, a herniated disc in his neck, a nasty elbow problem, an Achilles tendon injury and a shoulder injury to name but a few - and we wouldn't be surprised if that was only the tip of the iceberg.

Cena has an insane ability to get himself back to full fitness within a short space of time, but that isn't really his 'superpower' anymore. If he had the determination to come back really quickly because he was involved in a storyline of real importance then it'd make a lot of sense - but we all know that isn't the case.

These injuries pile up and while surgeries can always be done to repair certain issues, that isn't really the point. If Cena is signed on to do a movie and he messes up his elbow during his return bout at WrestleMania or SummerSlam, then the backlash from that is going to be fairly intense. It's just not worth it.