Guest Series: The Science of High-Intensity Interval Training with Dr. Marty Gibala (Part 2)

Dr. Steven Noseworthy welcomes Dr. Martin Gibala, one of the world’s leading researchers in exercise physiology, to Func Med Nation. As a Professor and Faculty of Science Research Chair in Integrative Exercise Physiology at McMaster University, Dr. Gibala runs an internationally recognized laboratory focused on the mechanistic basis of exercise responses in humans. His groundbreaking research has significantly advanced our understanding of how different forms of exercise — particularly high-intensity interval training (HIIT) — impact metabolic health, performance, and longevity. With numerous peer-reviewed publications and frequent invitations to speak at scientific conferences, Dr. Gibala is widely regarded as a top authority on interval training. In this episode, he breaks down the latest science on HIIT versus steady-state cardio, the minimal effective dose of exercise for health benefits, practical applications for both patients and high performers, and how to individualize exercise prescriptions in clinical practice. This conversation delivers evidence-based insights that every functional medicine practitioner can use to better guide patients on movement, metabolic health, and longevity. Guest Bio: Dr. Martin Gibala is a professor and the Faculty of Science Research Chair in Integrative Exercise Physiology at McMaster University in Hamilton, Canada. His research examines the mechanistic basis of exercise responses in humans and the impacts on health and performance. He regularly publishes in peer-reviewed journals and speaks at scientific meetings. He runs an exercise physiology laboratory that is internationally recognized for research on interval training. https://martingibala.com/