Vale Tudo is a Brazilian martial art and combat sport that translates to "anything goes." It originated in the early 20th century and combines various fighting styles, allowing a wide range of techniques, including striking and grappling. The sport gained popularity through underground matches and eventually led to the development of modern mixed martial arts (MMA). Competitors in Vale Tudo typically fight in a ring or an enclosed area, with minimal rules. The goal is to defeat the opponent by knockout, submission, or judges' decision. Notable fighters, such as Rickson Gracie, have contributed to its legacy, showcasing the effectiveness of different martial arts disciplines.