As a longtime action movie star, Sylvester Stallone knows a thing or two about cuts, bruises, broken bones and the whole shebang. In fact, he once joked, "I grade the quality of a film by the intensity of the injuries. When I shot Stop! Or My Mom Will Shoot, I never got hurt. Through Rambo and The Expendables, I break my neck and my spine and I dislocate both shoulders." In 2014's The Expendables 3, in which he reprised his role as mercenary Barney Ross, Stallone admitted he suffered his worst on-set fall to date, permanently injuring his back. "In this one here, I end up really taking a fall on my back and had some metal put in there, so if you hear any squeaking, it's not my shoes but my back. But I'm getting better."
The third installment in the Expendables franchise also almost killed co-star Jason Statham. While he was driving a truck on a loading dock, the brakes failed and the truck plunged 60 feet into the Black Sea. Thankfully, Statham—who once competed as an Olympic diver—was able to get free and swim to safety. Dangerous movie, this one!