Eat your heart out science nerds! Joe and Matti review a podcast about dopamine and apply their learnings to optimize endurance sport and training. Joe does a deep dive into additional dopamine research and compares his findings to the podcast. They discuss how dopamine influences addiction, motivation, and what is known and unknown about how it works. Also, Matti's son has started ripping around pump tracks on a strider, which inspires Matti to play more. Joe is embracing fall through trail running.