With Jack temporarily out of the news cycle, he asks Brady Holmer, his fitness-expert friend and fellow runner and podcast host, to talk about something a bit removed from the headlines (though not entirely): America’s obesity epidemic. They discuss how bad it is, how it got so bad, and what, if anything, can be done about it.

Taking a break from politics, Jack brings back his friend, budding exercise scientist Brady Holmer, to talk about what the “runner’s high” really is, how it doesn’t mean that running is all hunky-dory, and how to deal with running-related setbacks.

Jack brings back his friend and fellow runner Brady Holmer, a PhD student studying cardiovascular physiology at the University of Florida, to talk about running and to argue whether bodily immortality would be a good thing.

Well, maybe not everything. But in this episode, Jack invites a longtime friend, former running competitor, and budding cardiovascular expert for an episode (our longest yet) about running: Why people do it, whether it’s bad for you, how a non-runner would get into it, etc.