Physiology

Exercise physiology involves the study of the acute responses and chronic adaptations to exercise. Humans aren’t machines—we’re much more complicated.

From anaerobic threshold to environmental acclimatization, from FTP to PGC-1 alpha, we explore the science of human performance.

Latest

VO2max test with Erica Clevenger

Could Respiration Be Your Limiter?

Athletes spend much of their time training their legs and heart. What about our lungs? Steve Neal breaks down the components of respiration to help explain why it could be holding you back.
lactate-workload plot of thresholds

The True Definition of Threshold

Your lactate threshold may not be what you think it is. Coach Trevor Connor explores the true definition of this physiological turn point.
triathlete racing in the heat

Exercise in the Heat Pathway

Endurance athletes inevitably face the challenges imposed by training and racing in the heat. How do our bodies respond, and what are ways that we can best prepare? Learn how to beat the heat with advice from Dr. Stephen Cheung, Dr. Stephen Seiler, and a range of experts and coaches.
heat adaptation with Dr. Stephen Cheung

Exploring Heat Adaptation Methods

Dr. Stephen Cheung explores how to develop heat adaptation protocols that fit your event, budget, and circumstances.