Upgrade Your Vagus Nerve: Control Inflammation, Boost Immune Response, and Improve Heart Rate Variability with New Science-Backed Therapies (Boost Mood, Improve Sleep, and Unlo

Upgrade Your Vagus Nerve is a guide to understanding and improving vagus nerve function for better health. The book explores how the vagus nerve connects to the parasympathetic nervous system and the microbiome-gut-brain axis, and examines psychological and physical stressors such as traumatic incidents and nutritional deficiencies. The book presents strategies for treating conditions including headache, chronic pain, anxiety, and depression. It explains how to measure vagus nerve function using heart rate variability (HRV) and other devices, and covers a range of approaches to upgrade HRV and vagus nerve tone, including non-invasive electrical stimulation, breathwork techniques, nutritional optimization, sound therapy, temperature exposure, and circadian biology alignment. This is a follow-up to Dr. Navaz Habib's earlier book Activate Your Vagus Nerve, expanding beyond activation to include measurement techniques and practical protocols for building resilience and managing stress.