Hypnosis is often demonstrated in the entertainment world as someone dangling a stopwatch in front of another’s face telling them they’re “getting very sleepy,” and then when the person awakes, engaging in some bizarre behavior. But there’s more value to hypnosis than just entertainment. Hypnosis can be used to medically treat disorders that involve the brain -- such as anxiety, stress, pain, and bad habits. This week on “Take Care,” Dr. David Spiegel of Stanford University explains the medical value of hypnosis . Spiegel is Willson Professor and Associate Chair of Psychiatry & Behavioral Sciences, Director of the Center on Stress and Health, and Medical Director of the Center for Integrative Medicine at Stanford School of Medicine.