This week, we’re joined by “The Ultramarathon Man” himself, Dean Karnazes.

Stop during any moment of the day today and think to yourself “I wonder if Dean Karnazes is running right now.” The answer is probably yes. We’re not sure Dean Karnazes ever stops running.

One named by TIME magazine as one of the “100 Most Influential People in the World,” Dean Karnazes has pushed his body - and mind - to inconceivable limits. 

Probably most well known for running 50 marathons in 50 states for 50 consecutive straight days, Karnazes has logged miles in places people wouldn’t dream of stepping foot. He’s run racing in the hottest, driest, windiest, and coldest places in the world including across Death Valley in the middle of summer, and ran 26.2 at the South Pole.

Karnazes is also a New York Times best-selling author and his latest book - "A Runner’s High: My Life in Motion" - might be his best work yet. 

In this episode, Dean some of the amazing stories in his new book, running and age, the mind of the runner, his diet, endurance and sleep, and how long he plans on running.