The Sun Dance is a ceremony practiced by some Native Americans in the United States and Indigenous peoples in Canada, primarily those of the Plains cultures, as well as a new movement within Native American religions. Members of otherwise independent bands gather to reaffirm beliefs about the world and the supernatural through rituals of personal and community sacrifice. Typically, young men would dance semi-continuously for several days and nights without eating or drinking; in some cultures, self-mortification was or is currently also practiced.