Can a simple yoga breathing practice improve exercise tolerance? This episode of www.YogaInsightPod.com examines a randomized controlled trial led by David A. Kaminsky and colleagues from the University of Vermont College of Medicine, Baylor College of Medicine, and private yoga practices, testing Dirgha (Three-Part Pranayama) for 12 weeks and its effects on walking capacity, breathing mechanics, symptoms, and quality of life in adults with COPD.