Unlocking the Power of Your Vagus Nerve: Techniques and Practices to Activate and Enhance Vagal Tone The vagus nerve is a major cranial nerve that connects the brain to various organs in the body. It helps regulate functions such as heart rate, digestion, breathing, and relaxation. It plays a role in the parasympathetic nervous system and is involved in sensory functions and mental health. Dysfunction or damage to the vagus nerve can have significant health implications. | Dr. Jaban Moore