Short Stuff: Firewalking

In this episode of Stuff You Should Know's "Short Stuff" segment, hosts Josh and Chuck explore the ancient practice of firewalking and finally reveal the real reason people can walk across hot coals without getting burned. Despite its mystical and spiritual reputation across cultures like India, Greece, Japan, and Thailand, firewalking is actually explained entirely by physics rather than any supernatural force. The guys break down the four key physical factors that make it possible—including the use of specific types of wood like cherry and maple that don't conduct heat well, a protective ash layer, the presence of embers rather than flames, and the brief contact time involved in quickly crossing the fire bed.