In today’s fitness space, self-experimentation is the name of the game. All kinds of people are embracing new technologies and diets in the hope of finding faster strategies for getting in the best possible shape. In this crowd, few are pushing things further than Ben Greenfield. The exercise physiologist and personal trainer has made his mark by exploring the limits of what seems reasonable (Example A: injecting his penis with stem cells) and voicing controversial ideas, including skepticism about standard vaccination practices. In his new book, Boundless: Upgrade Your Brain, Optimize Your Body & Defy Aging, he covers almost anything you might want to know about being the fittest and healthiest you can be. For this episode, Outside editor Chris Keyes speaks with Greenfield about strategies for better sleep, the upsides of cold therapy, the problems with gym workouts, and more.
Follow the Outside Podcast
Outside’s longstanding literary storytelling tradition comes to life in audio with features that will both entertain and inform listeners. We launched in March 2016 with our first series, Science of Survival, which was developed in partnership with PRX, distributors of the idolized This American Life and The Moth Radio Hour, among others. We have since expanded our show and now offer a range of story formats, including interviews with the biggest figures in sports, adventure, and politics, as well as reports from our correspondents in the field.