A stunt double is a professional performer who substitutes for an actor during dangerous or physically demanding scenes in films, television shows, or live performances. Their primary role is to execute stunts that may involve high falls, fight choreography, or complex action sequences, ensuring the safety of the main actor while maintaining the visual integrity of the scene. Stunt doubles often undergo extensive training in various skills, such as martial arts, gymnastics, and safety techniques. They work closely with directors and choreographers to create realistic and thrilling action moments, contributing significantly to the overall excitement of productions like action movies and adventure films.