Exercise causes a complex series of reactions involving hormones that can either burn fat or build muscle. On this rerun episode from 2017, Fabio Comana, a professor at San Diego State University, reviews the science of how exercise changes your body. Get ready for a deep dive into the science of exercise physiology, the good news is that, unlike the students in Fabio's classes, you will NOT be tested on this information. Listen to the post-show wrap-up to learn how to apply this info to your own workouts.

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