In Part 1, Doniphan Stone shared his story of surviving cancer at the young age of 15. And how that eventually led to his career in health and fitness and the creation of the Corefirst training system. In this Part 2 episode, we hear from Donny and his business partner, Jeff Huling. They share the genesis story of Corefirst, but we also talk about how health and fitness impacts your leadership and longevity. We talk about the importance of strengthening your core for your mental health and Jeff shares a deeply personal story of triumph about his experience with bullying as a kid. These two are so inspiring and they will challenge you to become the leader you want to be starting from your core first.