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.

To learn about YOUR physiology, talk with our coaches.

Latest

The Science Behind Going Slow to Be Fast

The concepts of central and peripheral conditioning help explain why an effective training base period leads to speed and durability in the race season.
Cyclists using polarized training

Polarized Training Pathway

World-class athletes have proven just how effective low-intensity training can be when combined with a small (but mighty) dose of high-intensity work. In collaboration with Dr. Stephen Seiler, Fast Talk Labs has put together everything you need to know on the topic of polarized training.

Testing to Identify Respiration Limiters

Coach Steve Neal helps athletes develop their respiratory systems to improve performance. Find out how the testing works, the limiters it exposes, and what you can do to start training your own breathing.
Chris Case and Trevor Connor indoor cycling.

How to Warm Up for Zwift Races

The demands of virtual racing are different from live racing. Physiologist Rob Pickels explores the science of warmups and how this applies to fast-start Zwift races.
Fat bike in the snow

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 renowned environmental physiologist Dr. Stephen Cheung and many other experts.