If you ask around, many mixed martial arts fighters will tell you the same thing – that some of the most brutal, crazy and memorable fights they ever saw took place behind closed doors in the gym.
Oftentimes those stories aren’t spoken about publicly, but in this article we’ve unearthed 10 of the craziest MMA gym fight stories ever told, showing what happens behind the scenes when some of the sports biggest stars lock horns in training, with no referee or cage-side doctor to call upon if things get out of hand.