The amount of dedication, focus, sacrifice and skill that it takes to make it to the level of wrestling professionally for a major organization like WWE is immeasurable, and the athletes that do make it that far are, of course, incredibly determined. With that being said, sometimes the men and women are so driven that they push themselves to dangerous limits.Driver to be the absolute best they can be, WWE athletes are required to keep up a crazy pace of physical accomplishments 24/7, 365. It's no wonder that injuries are an increased occurrence; the caliber of athlete that makes it all the way to WWE often doesn't know when to quit, which can be to their detriment. There's been plenty of examples over the years of top-level wrestlers who probably should have retired or at least taken extended time off in order to improve their long-term health that chose not to. There are many factors that likely affected their decision but their desire to succeed is usually at the very top of the list. In the ultra-competitive environment that WWE fosters, if a superstar won't push their body beyond the limit, someone else will and they'll likely take their job, too. When your 70-year-old boss works 80-hour weeks, sleeps three hours and works out twice a day, what excuse do you have?