Judo is a martial art with throws that originated in Japan in the late 19th century. It is a modern form of martial arts that focuses on using an opponent's momentum and energy to their own advantage. Judo practitioners use throws, joint locks, pins, and other techniques to defeat their opponents. The goal of judo is to throw or pin an opponent to the ground, immobilize them, or force them to submit. Judo is an Olympic sport and is practiced by millions of people around the world.