<b>Unlock the full potential of your Vagus Nerve with this transformational guide, including practical strategies to treat headache, chronic pain, anxiety, depression, and more.</b> <p/>Harness the power of vagus nerve (VN) function and heart rate variability (HRV) in the long-awaited follow-up to bestseller <i>Activate Your Vagus Nerve </i>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. <p/> Cowritten by functional medicine expert Dr. Navaz Habib, this book offers an approachable overview of recent research, easy-to-implement strategies, and more. With <i>Upgrade Your Vagus Nerve</i>, you'll learn how to: <br> <ul> <li>Understand the impact of psychological and physical stressors, such as traumatic incidents and nutritional deficiencies</li> <li>Explore the intricate functioning of the vagus nerve and its connection to the parasympathetic nervous system and the microbiome-gut-brain axis</li> <li>Learn how to measure vagus nerve function using heart rate variability (HRV) and other devices</li> <li>Discover a wide range of strategies to upgrade your HRV/VN tone, including non-invasive electrical stimulation, breathwork techniques, nutritional optimization, sound therapy, temperature exposure, circadian biology alignment, and more</li> </ul> <br>Find balance, become resilient, and embark on a journey toward improved well-being with the help of the vagus nerve.