Unlike professional sports, wrestlers can often compete into their 40s, 50s and even 60s.
Sure, you'll see guys like Andy Pettitte, Jamie Moyer, Martin Brodeur or a Brett Favre cross the 40 mark, but they are the exceptions.
Pro sports are a young man's game. But in wrestling, 40 can just be the start of another chapter.
Since wrestling isn't just based purely on physical performances, guys don't have to hang it up until far later in their careers. They can find ways to stay on top by reinventing themselves, or becoming better workers to keep their spots.
Within WWE and TNA, there is a noticeable number of talent that are still going at the age of 40 or above. Some should have retired years ago, but quite a few are still earning their keep, and putting to shame guys half their age.
This list excludes part-time wrestlers like Undertaker, The Rock and HHH and instead focuses on those who are working a full-time (or close to full-time) schedule.
Here are the 10 best wrestlers over the age of 40 currently competing in wrestling.