Vagus Nerve: 3 Books in 1: Improve your Natural Healing, Reduce Anxiety, Depression, PTSD with Self-Help Exercises, Vagus Nerve Stimulation and Polyvagal Theory

Vagus Nerve: How to Improve Your Natural Healing and Overcome Anxiety, Depression, Inflammation, Stress, PTSD, Trauma with Self-Help Exercises, Vagus Nerve Stimulation and Polyvagal Theory, Vol.2

Vagus Nerve: How to Improve Your Natural Healing and Overcome Anxiety, Depression, Inflammation, Stress, PTSD, Trauma with Self-Help Exercises, Vagus Nerve Stimulation and Polyvagal Theory, Vol.3