Cena as the WWE World Heavyweight Champion in 2013.
When John Cena debuted on WWE SmackDown in 2002, few could've expected the monumental success he would have.
Losing in his debut match to Kurt Angle, Cena personified 'Ruthless Aggression', refusing to give up despite this setback.
At WrestleMania 20, Cena got his first taste of championship gold, winning the US Title from the Big Show, and established himself as the man a year later, defeating John 'Bradshaw' Layfield to win his first of 16 World Championships.
Since that fateful April night in 2005, Big Match John has gone on to become a huge star in and out of the ring, recently transitioning to a growing career in Hollywood, where he will next star in the upcoming Transformers prequel, Bumblebee.
But despite his massive success, there are still a lot of things fans may not know about him.
Here are five things you (probably) didn't know about John Cena.#5 His brains match his brawnCena returns as the Doctor of Thuganomics in 2012.
If you ask any WWE Superstar what you should do before joining the company, most will tell you to get some sort of qualifications outside of the ring.
After all, in just an instance a career can end, leaving a suddenly-retired Superstar trying to find other ways to get by.
Cena, is no exception to this, as the Cenation leader earned a degree in Exercise Physiology from Springfield College in Massachusetts.
Speaking to Men's Fitness, Cena said how his knowledge of the human body and exercise has helped him learn more about how to improve his body, as well as knowing when something is being strained.
Clearly, this degree in Excercise Physiology has paid off, as the 41-year-old is still in excellent condition all these years later.
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Thomas is a 23-year-old wrestling fan, who started watching in 2003. He is also a Journalism graduate from Sheffield Hallam University.
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