Function 82 Therapists can Test for Vagal Function without Touching.... 84 Chapter 5: The Polyvagal Theory—A New Paradigm for Health Care? 87 A Polyvagal Approach for Psychological and Physical Conditions 88 The Healing Power of the Polyvagal Theory 91 Relieving COPD and Hiatal Hernia 91 Treating a Hiatal Hernia 98 Diap