Shamanism is an ancient form of healing practiced by indigenous peoples across the world including places like Mongolia, Peru, Tibet, Siberia, Native America and Alaska and is distinguished by a belief in an unseen world of gods, demons, and ancestral spirits. The basis of the shamanic perspective is that the universe is a living organism with all of its components being spiritual entities. The foundation of well-being and health is living in harmony with the earth. The shaman, often holding the role of priest, magician or healer, holds an awareness and knowledge of other realms of being and consciousness. Through making contact with the supernatural world with the help of the spirits, the shaman serves as a bridge between the mundane and higher and lower states of being. At times, the shaman uses drumming, chanting, flutes, and rattles during healing ceremonies.