
Breathe Better, Live Stronger: How Nasal Breathing Fights Cardiac Fibrosis and Boosts Performance
Oxygen AdvantageShow Notes
Dr. George Dallam holds the rank of Distinguished Professor in the School of Health Science and Human Movement at Colorado State University – Pueblo (CSUP). He has taught a wide variety of classes in exercise physiology, research and statistics, behaviour facilitation, sport psychology, kinesiology, biomechanics, management, exercise assessment and prescription, swimming, running and triathlon. He is past chair and an ongoing member of the CSUP Institutional Review Board, as well as being the longtime chair of the CSUP Faculty Compensation Committee. He is also the former inaugural National Teams Coach for USA Triathlon and continued to work for many years with elite U.S. triathletes as a coach, advisor and consultant while at CSUP. Athletes coached directly by Dr. Dallam have included National Elite and Age Group Champions, Olympians, Pan American Games Medalists, World Age Group Champions and the top ranked male triathlete in the world in 2005-2006, Hunter Kemper. Dr. Dallam has been involved in numerous research studies and the publication of their results at both CSUP and the USOC examining various aspects of triathlon performance and training, diabetes risk factor modification, and the effects of functional movement improvement on running . His primary research interest recently is focused on the capability of human beings to adapt to nasal only breathing during exercise as a way to improve both health and performance. In this fascinating episode, George Dallam takes us on a journey that began in 2005, when frequent health issues pushed him to explore the unexpected benefits of nasal breathing. Over the course of six months, George transitioned to nasal breathing during exercise, resulting in remarkable improvements in his cycling and running performance, as well as a significant reduction in sinus infections. Join us as George shares insights from groundbreaking studies that reveal how nasal breathing can reduce VO2 max by 10%, yet increase efficiency by helping athletes achieve 85% of their VO2 max at a lower ventilation rate. He also dives deep into the physiological benefits, from improved blood flow and cognitive function to reducing cardiac fibrosis. But the path isn’t always smooth—George discusses the challenges athletes face when making the switch from mouth breathing to nasal breathing, and why gradual adaptation is key to avoiding hypoxia. Whether you're an athlete or just curious about how breathing affects your health, this episode will leave you inspired to try nasal breathing for yourself. Plus, George shares practical tips like using nasal dilators and taping for better adherence. Tune in to discover how something as simple as breathing through your nose could transform your performance and well-being! Be sure to check out George's new book, Nasal Breathing Paradox During Exercise, at the link below: https://www.amazon.com/Nasal-Breathing-Paradox-During-Exercise/dp/B0D9LJVRVH
More from Oxygen Advantage
Patrick McKeown sits down with Bob van de Gronde, director of Air Hunger – The Breathwork Movie, now streaming worldwide. The film takes breathing out of the wellness corner and into performance, following elite athletes, military veterans, scientists and everyday people. A conversation about putting breathing on screen, and why it might be the most underrated lever we have.
Patrick McKeown sits down with Dr. Tim Hughes, an anaesthetist, advanced breathwork instructor, and co-founder of The Breath Doctors. Tim uses breathing to calm patients before surgery and himself before he walks through the hospital doors. A conversation about performing under real pressure—and how something as simple as breath can be the difference.
Patrick McKeown and James Nestor meet face-to-face for the first time to discuss the science of breathing, functional breathing methods, and how nasal breathing transforms sleep, health, and well-being. After years of correspondence—Zoom calls, Instagram Lives, emails, voice notes—they finally sit down together. What was meant to be one episode ran long. They kept talking well into dinner.
What if the key to running further, calmer, and healthier wasn't in your legs — but in your nose? In this episode, Patrick McKeown sits down with Dr. Bill Hang: orthodontist, airway pioneer, and marathon runner approaching his 80th birthday. After hearing Patrick speak 15 years ago, Bill made two decisions that changed his life — taping his mouth at night and running with his lips sealed. He's since run the Boston Marathon multiple times breathing entirely through his nose, including once with his mouth taped the whole way. But this conversation goes far beyond running. Dr. Hang shares why he walked away from traditional extraction orthodontics, how forward jaw development can transform a child's airway, and what every parent should know before agreeing to have their child's teeth removed.
Consistently Good, Not Occasionally Perfect: Nutrition, Habits & Breathing with Scott Baptie In this episode, Patrick McKeown sits down with nutritionist, author, and recipe creator Scott Baptie to explore simple, realistic nutrition, sustainable weight loss, and how breathing became the “missing piece” in Scott’s own health routine. They cover: Why simplicity and accessibility matter more than perfection in nutrition The real role of protein for satiety, recovery, and weight loss Why you can’t spot-reduce belly fat (and what actually works) The truth about supplements, including creatine and protein powder How habits and small steps beat short-term extreme diets The impact of sleep, stress, alcohol, and social media on food choices Scott’s personal experience with nasal breathing, mouth taping, VO₂ max gains, and Patrick’s work Work–life balance, outsourcing, and building a lifestyle you can actually sustain Whether you’re an athlete, a busy parent, or just trying to feel and perform better, this conversation gives you practical, down‑to‑earth strategies you can start applying today. ⏱ Timestamps / Chapters 0:00 – Intro: Who is Scott Baptie? 0:36 – Scott’s journey: from blog to nutrition career & fitness modeling 3:06 – Simplicity and accessibility in nutrition: the food hierarchy 6:33 – Why protein matters: appetite, recovery & weight loss 9:02 – Creatine, whey, and which supplements are actually worth it 11:49 – Belly fat, spot reduction myth & realistic fat loss expectations 16:06 – Scales vs how you feel: better ways to track progress 16:33 – Water, hydration & simple practical guidelines 18:27 – Finding your passion and evolving a career in nutrition 22:15 – Work–life balance, productivity & “work less, make more” 25:10 – Alcohol, moderation & individual differences in habits 28:17 – How breathing changed Scott’s health and performance 32:50 – VO₂ max, nasal breathing, mouth taping & tracking sleep 34:35 – Was switching to nasal breathing hard at the start? 36:10 – Mouth tape, beards & practical tweaks for better sleep 36:44 – Habits: why “consistently good” beats “occasionally perfect” 39:57 – Making change easy: what to eat more of, less of & how to do it 41:21 – Meal prep, slow cookers & freezer strategies for busy lives 42:27 – Tiredness, cravings & how poor sleep derails nutrition 44:37 – Sleep as a pillar: hygiene, environment & tracking 45:35 – Social media, attention, and protecting your mental bandwidth 47:50 – Generational shifts: who’s going to the gym now? 50:38 – Scott’s books, where to find him & free gift