Dr. David 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 University School of Medicine.  He has more than 40 years of clinical and research experience studying psycho-oncology, stress and health, pain control, psychoneuroendocrinology, sleep and hypnosis. He has published 13 books, 404 scientific journal articles, and 170 book chapters on hypnosis, psychosocial oncology, stress physiology, trauma, and psychotherapy.    Dr. David Spiegel is an Psychiatrist and the Wilson Professor and Associate Chair of Psychiatry at Stanford University School of Medicine, where he is known for his research into psycho-oncology; the neurobiology of therapeutic hypnosis and the role of the mind-brain-body connection in cancer outcomes and management among other topics.  He directs the Stanford Center on Stress and Health and is a recognized authority on hypnosis's clinical utility and neuroscience. A true expert and trendsetter in the field of hypnosis Dr. Spiegel has appeared on the Andrew Huberman podcast, and he joins #OntheMark to dive into the topic of hypnotherapy and hypnosis for health, well-being, and for increased and improved focus and performance on the golf course. Dr. Spiegel answers the following questions: What is Hypnosis and how does it work? What does Hypnosis do the the Brain? What is is like to be hypnotized? He explains the different parts of the human brain and how they work, and perhaps don't work, together, and he elaborates on the three things that happen to the brain while in a state of hypnosis.  By way of explanation he also talks about brain activity in stages of stress and relaxation, in panic and in calm. Dr. Spiegel then talks about his work with competitive athletes and illustrates how hypnosis has allowed them to perform at the best in high pressure situations.  He and Mark Immelman also discuss the mental state Tiger Woods gets into during competition.  To that Dr. Spiegel illustrates how athletes and people can perform self-hypnosis, through the Reveri App for peak mental and physical performance. This podcast is also available as a vodcast on YouTube.  Search and subscribe to Mark Immelman. There is also a discount code for listeners for the Reveri App.  Go to https://reverihealth.app.link/onthemark for a free 14 Day Trial.