Unlock the full potential of your vagus nerve with this transformational guide to create a roadmap to a healthier, happier life.

"I love this book. It introduces the concept of how important the function of our vagus nerve is to our health, and also provides practical approaches that a reader can use to improve their resilience and management of stress. It is a winning combination." —Jeffrey Bland, Ph.D., "The Father of Functional Medicine"

Harness the power of vagus nerve (VN) function and heart rate variability (HRV) in Dr. Navaz Habib's long-awaited follow-up to his bestseller Activate Your Vagus Nerve. Going beyond activation to explore stressors, measurement techniques, and practical protocols, Upgrade Your Vagus Nerve presents strategies to treat multiple conditions, including headache, chronic pain, anxiety, depression, and more.

With an approachable overview of recent research, easy-to-implement strategies, and more, 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.