Upgrade Your Vagus Nerve

Upgrade Your Vagus Nerve

By Navaz Habib, JP Errico

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 to bestseller Activate Your Vagus Nerve 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.


Cowritten by functional medicine expert Dr. Navaz Habib, this book offers an approachable overview of recent research, easy-to-implement strategies, and more. With Upgrade Your Vagus Nerve, you’ll learn how to:

  • Understand the impact of psychological and physical stressors, such as traumatic incidents and nutritional deficiencies
  • Explore the intricate functioning of the vagus nerve and its connection to the parasympathetic nervous system and the microbiome-gut-brain axis
  • Learn how to measure vagus nerve function using heart rate variability (HRV) and other devices
  • 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

Find balance, become resilient, and embark on a journey toward improved well-being with the help of the vagus nerve.

Author Dr. Navaz Habib

Navaz Habib

Dr. Navaz Habib is the founder of Health Upgraded a Functional Medicine and Health Optimization clinic in Toronto, Canada, working with high performing professionals, athletes and entrepreneurs to dig a little deeper and find the answers to what is holding back their health. He works with those who want to take their health to a higher level, allowing them to contribute to humanity and serve more people. 


Having gone through his own personal experiences with poor health and weight struggles, Dr. Habib is well equipped to implement personalized recommendations for each of his clients. In identifying the root causes of health imbalances, and addressing them naturally, his patients experience optimal health the way their bodies were meant to feel, and allow them to give back to the world in whatever way they want to serve.


Dr. Habib’s book Activate Your Vagus Nerve is a simple to follow guide to help you identify and address a major missing piece in patients dealing with chronic health concerns such as anxiety and depression. By activating the Vagus nerve, we can optimize our productivity, focus and energy levels, allowing us to experience the effects of upgraded health.

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JP Errico

JP Errico is a highly accomplished individual with a diverse range of expertise as an executive, entrepreneur, and inventor. He currently serves as a board member and founder of ElectroCore, a prominent company specializing in neuromodulation that has developed a pioneering noninvasive vagus nerve stimulator.


JP has been credited as an inventor on over 250 issued US patents, and has founded and successfully sold or taken public numerous medical device and pharmaceutical companies in partnership with Dr. Thomas J. Errico, including Fastenetix, K2 Medical Systems, AD4-Pharma, E2, and SpineCore. He earned an undergraduate degree in aeronautical engineering from the Massachusetts Institute of Technology and worked at the Air Force National Laboratory’s Lincoln Laboratories. Additionally, he holds graduate degrees in both law and mechanical/materials engineering from Duke University.

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Released: February 2024
Price: $16.95

ISBN-10: 1646046188
ISBN-13: 9781646046188

5 x 8
192 pages

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