The Freikörperkultur (FKK) is a social and health culture that originated in the German Empire; its beginnings were historically part of the Lebensreform social movement in the late 19th century. The Freikörperkultur, which translates to free body culture, consists in the connection of health aspects of being naked in light, air and sun with intentions to reform life and society. It is partially identical with the culture of nudity, naturism and nudism in the sense of communal nudity of people and families in leisure time, sport and everyday life.