Dr. Andrew Sellars is a Canadian physician, performance physiologist, entrepreneur, and coach whose career has been dedicated to understanding human performance and helping people unlock their full potential. Based in Vernon, British Columbia, he has spent more than three decades working at the intersection of medicine, physiology, endurance sport, and innovation.

As a medical doctor and anesthesiologist with a Master’s degree in Athletic Coaching, Dr. Sellars has earned international recognition for his work in biomarker-guided training and respiratory performance. Throughout his career, he has advised and coached athletes ranging from ambitious amateurs to world-class competitors, applying objective physiological data to improve performance, health, and resilience. His philosophy has always been rooted in the belief that better decisions come from better measurement, and that understanding the body’s signals is the key to achieving sustainable excellence.

In 2013, Dr. Sellars co-founded VO2 Master, a company created to revolutionize metabolic testing by making laboratory-grade physiological assessments portable, practical, and accessible. The company’s wearable metabolic analysis technology has been adopted by coaches, researchers, clinicians, and elite athletes around the world, helping transform the way performance is measured and understood.

Building on decades of research and experience in respiratory physiology, Dr. Sellars later became a co-founder and Chief Science Officer of Isocapnic Technologies Inc., a company focused on respiratory muscle training and breathing performance. His work has helped advance the understanding of how breathing influences athletic achievement, recovery, health, and human potential.

Beyond his professional accomplishments, Andrew is known for his curiosity, generosity, and lifelong passion for learning. He is a mentor to coaches, entrepreneurs, healthcare professionals, and athletes, and remains deeply committed to translating complex science into practical tools that improve lives. Whether in the operating room, on a race course, in a research discussion, or working with a developing athlete, his mission remains the same: to help people discover what they are truly capable of becoming.

Through his writing, speaking, and innovations, Dr. Sellars continues to challenge conventional thinking and inspire others to pursue health, performance, and personal growth with both scientific rigour and human compassion.