We follow up the episode “Can You Teach Speed?” with a deeper dive into muscle fiber types that we touched on in that episode:  What’s the difference between fast twitch and slow twitch fibers? Does the mix of fibers tend to affect performance? Aesthetics? Is changing your mix of fiber types possible, and if so, is it even helpful. Dr. Andy Galpin joins us again as expert for this discussion. Andy is a tenured Professor in the Center for Sport Performance at CSU Fullerton, and holds a PhD in Bioenergetics. Our ideas start at about 13:18. Andy starts dropping knowledge starting at around 22:53. Huge thanks to Andy for being our expert once again. You can find him on Instagram: @drandygalpin and his website at andygalpin.com  (where there’s tons of free information). You can also find his book with Brian MacKinsey, “Unplugged” on Amazon.com Hosted by Mike Farr (@silentmikke) and Jim McDonald (@thejimmcd). Produced by Jim McDonald Production assistance by Connor O’Neal. Theme by Aaron Moore. Branding by Joseph Manzo.