Rey Mysterio has plenty of gas left in the tank.

Rey is 45 years old and has been wrestling for three decades, but those who watch him on WWE Raw still take notice of just how good he is.

The lucha legend has credited stem cell therapy in the past for his career rejuvenation as injuries have taken their toll over the years. When discussing his stem cell process, Rey told Konnan and Disco Inferno on Keepin It 100, "It helps regenerate and heal any part of your body that has suffered injuries. With the amount of surgeries I've had on my left knee, it's helped tremendously. I would do 500,000 through an IV and do that for two days. I would get into a hyperbaric chamber every time I would do my treatment. I did injections to my left knee and right knee. I did a shot to my shoulder because of the injury with Samoa Joe at Money in the Bank and I did my ankle, which I injured before WrestleMania. Both of my wrists because I suffer from carpal tunnel and both of my biceps since both are torn. The right one I repaired, the left one I didn't repair, so I got an injection done. I also got my spine, that was probably the worst pain."

When asked how long he can keep wrestling at this level, Rey said, "At the rate that I'm going, I can see myself doing this for about five more years."

WWE recently offered Mysterio a new three-year deal to re-sign with the company, but it has not been reported if Mysterio and WWE have agreed to terms. Mysterio continues to work with WWE and his son Dominik, who is now a featured star on WWE TV as well.

Rey and Dominik were part of the closing angle on WWE Raw with Retribution laying them out.

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