Everyone gets so worried that they lose muscle when they do cardio to get lean. Where does this fear come from?
Part I of this series was about the benefits of fasted cardio and now I want to talk about the negatives of it.
The most common negative aspect that people hear about with fasted cardio is cortisol. With fasted cardio, your coritsol, a muscle wasting hormone, is going to be very high. You’ve consumed nothing anabolic with the traditional fasted cardio system and you have a potential bad situation for your muscles. Cortisol will lead to the use of amino acids for energy and since you’re taking none in, it’s going to be pulled from your muscle.