Jiu-jitsu is a martial art and combat sport that focuses on grappling and ground fighting. It emphasizes techniques such as joint locks and chokeholds, allowing a smaller person to defend against a larger opponent by using leverage and technique rather than brute strength. Originating from Brazilian jiu-jitsu, it has gained popularity worldwide for self-defense, fitness, and competition. Practitioners often train in a gi, a traditional uniform, or in no-gi attire, which allows for a different style of grappling. Jiu-jitsu promotes discipline, respect, and physical fitness among its practitioners.