VO2max testing and lactate testing in Boulder Colorado

Physiology

Humans aren’t machines—we’re much more complicated. Exercise physiology involves changes in the body from exercise and rest.

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

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Person ultrarunning across a snowy mountain

Exercise in the Cold Pathway

Exercising in cold weather has a significant impact on our physiology—from breathing to metabolism to performance. In this Pathway, you’ll learn about the physiological and psychological effects of cold from many experts.

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.