Muscle Fiber Hypertrophy
Andy explains how endurance training can lead to fiber type specific hypertrophy, resulting in large slow twitch muscle fibers. He also discusses how exogenous testosterone can change the game and lead to exceptionally large muscle fiber size.In this clip
From this podcast

The Peter Attia Drive Podcast
250 ‒ Training principles for longevity | Andy Galpin, Ph.D. (PART II)
Related Questions
How do fast and slow twitch muscle fibers differ in the context of the episode 250 ‒ Training principles for longevity | Andy Galpin, Ph.D. (PART II) and the clip Muscle Fiber Hypertrophy?
How do fast-twitch fibers differ from slow-twitch fibers in the episode "Why Muscle Matters & How to Build Muscle | Perform with Dr. Andy Galpin" and the clip "Muscle Fiber Types"?
When talking about strength, Andy Galpin said it’s all about total force. So when strength training, is it more about training your nervous system through intensity, with fewer repetitions but as much frequency as you want? Am I correct in understanding that you are training the nervous system to recruit more fibers efficiently to produce higher total force? How did I do in understanding this concept?