Muscle for Life

What determines the true limits of our physical performance? It it mostly hard-wired physiological factors that can’t be changed, or is it more nuanced than that? What about psychological factors? How much does the “inner game” affect the “outer game,” and how much is this under our control? People have been searching for answers to these types of questions for decades now, and new research has provided some pretty surprising insights. That’s why I wanted to talk to Alex Hutchinson, who’s been studying all of this for over a decade. In case you don’t know of Alex, he’s an award-winning science journalist, former physicist and national-class runner, regular columnist for publications like Runner’s World, Outside, and The New York Times, and in my opinion is one of the best fitness writers around. He has a new book out called Endure that dives deep into the fascinating science of human performance and potential, and in this interview, he shares with us some of the key takeaways from the extensive research that