Unlock the full potential of your vagus nerve with this transformational guide, including practical strategies to treat headache, chronic pain, anxiety, depression, and more. Harness the power of vagus nerve (VN) function and heart rate variability (HRV) in the long-awaited follow-up by Dr. Navaz Habib. This entirely new book goes beyond activation alone to explore stressors, measurement techniques, and practical protocols to create a roadmap to a healthier, happier life.