Watch this to the end to see what the men do when they’re in a trance. I got a chance to see this rare Javanese dance performed in rural villages and accompanied by gamelan music. Dancers are calling the spirits to possess them. When a dancer is possessed, he no longer performs regular dancing, but carries out dangerous acts, such as eating broken glass, coconut shell and fire. The dancers are healed by the shaman or man with the whip, with prayers and water.