A Tony Robbins seminar in San Jose, California left at least 21 participants badly burned after a motivational hot-coal walk went awry. Around 6,000 paying attendees at the "Unleash the Power Within" seminar were lined up to walk an eight-foot path of coals heated to betwen 1,200 and 2,000 degrees. Participants were told that the hot coals were a metaphor for facing their fears. "I just heard these screams of agony," one participant told the Associated Press. "People were in pain. It sounded like people were being tortured." At least three participants were sent to the hospital with third-degree burns.