Index Introduction: Why Yoga Is More Than Stretching The Origins of Yoga and Its Evolution How Yoga Affects the Body Flexibility and Strength The Brain-Body Connection Nervous System Balance The Role of Breathwork (Pranayama) The Science of Mindfulness in Yoga Hormones, Heart Health, and the Immune System Yoga for Mental Health and Stress Relief Evidence From Modern Research Comparing Yoga to Other Forms of Exercise How to Bring Yoga Science Into Daily Life Final Thoughts Rel