When your soul is startled, a cleansing ritual is needed to calm it. "Shoujing" is a common Taiwanese folk ritual used to relax a child after a frightening experience. Conventional wisdom says that when one is startled, the soul becomes disturbed, leading to bad dreams and illness. In this episode, we learn what happens to our brains when we are startled or stressed and the physiological causes and results of "being frightened."