Why do most runners stop? It’s not their legs - it’s their breath. International breathing expert Patrick McKeown explores the overlooked truth behind endurance and performance: that the feeling of breathlessness - not muscle fatigue - is what causes most runners to quit. But there’s a solution hiding in plain sight: nasal breathing. By shifting from mouth to nasal breathing while running, we retrain dysfunctional breathing patterns, improve CO₂ tolerance, and gain greater control over the breath. This method helps you run longer, recover faster, and perform better - while also improving mental resilience, focus, and recovery. Whether you're a competitive athlete or a weekend jogger, this talk will change the way you breathe, move, think and of course run! Patrick McKeown is a world-renowned breathing expert who has coached Olympic athletes, elite military, musicians like Chris Martin (Coldplay), and corporate professionals to improve focus, sleep, and well-being. His bestselling book The Oxygen Advantage—translated into 16 languages—has sold over 500,000 copies. The Oxygen Advantage® method enhances respiratory efficiency by improving functional breathing and balancing oxygen and CO2 levels. This reduces stress, boosts stamina, improves sleep, and speeds recovery by optimizing oxygen delivery and autonomic balance. A key focus is building CO2 tolerance for better physical and mental performance. With a global network of certified instructors, the method is used worldwide and continues to evolve through Patrick’s research and clinical work. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at https://www.ted.com/tedx