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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Athlete training at altitude

Fast Talk Labs Q&A #1

We get asked a lot of great—and nerdy—questions via our Fast Talk Labs Forum. Every month we’ll now be taking the best questions and publishing our answers. This month, our in-house physiologist Rob Pickels tackles the topics of altitude training and the impact of body composition on hypothermia.

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Cyclists using the polarized training method or 80/30 training

Polarized Training Pathway

In collaboration with Dr. Stephen Seiler, the “father of polarized training,” we have curated everything you need to know about the 80/20 training method.

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.