This practical guide helps us understand the role that cranial nerves play in our physical and mental well-being. The treatment approaches presented in the book are based on the so-called Polyvagal Theory, which is one of the most important discoveries in neurobiology in recent decades. Stanley Rosenberg, with over 30 years of experience as a body therapist, has recognized that the vagus nerve plays a central role among all cranial nerves in numerous complaints, both physical and psychological: anxieties and depression, as well as migraines and back pain, stem from a dysfunction of the vagus nerve. Through simple exercises illustrated and thoroughly described in the book, readers learn how to achieve deep relaxation, restorative sleep, and overcome injuries and traumas.