Dance is an art form that uses the human body as an instrument to express ideas, feelings, and emotions through movement in space and time. It has served various functions throughout history such as a form of religious worship, entertainment, preserving cultural heritage, and celebrating important events. The key elements of dance include the body, actions, space, time, and energy. There are many different forms of dance such as classical, modern, contemporary, folk, ethnic, ballroom, and more which have varying characteristics and origins.