Adopting the Unified Rules of Mixed Martial Arts, a standardized set of regulations governing the sport, allowed it to gain mainstream recognition and acceptance globally. It set acceptable terms for the use of strikes, throws, kicks, and grappling in mixed martial arts and defined illegal actions, including headbutting, eye gouging, biting, and groin attacks. Fight durations were set at three or five rounds, with intervals after each round, and final decisions made by judges if no knockout or submission occurred.