Dr. Arthur De Vany is nearly eighty years old and ripped. Better known as Art De Vany, he was signed as a professional baseball player in his youth and later earned his Ph.D. in Economics at UCLA. He is most famous for his "evolutionary fitness" approach to training and diet, and our conversation focuses on that. During his time at UCLA, Art did many things, including creating mathematical and statistical models to precisely describe the motion picture market. Art is Professor Emeritus of Economics of the University of California, Irvine, and is a member of its acclaimed Institute for Mathematical Behavioral Sciences. A lifelong student of metabolism and fitness, Art has lived as a Paleo athlete for more than thirty years and is considered a "patriarch" of the Paleo movement. He believes there is no such thing as "healthy" aging and that we can intervene to protect against the aging process. In this episode, we talk about his daily schedule, workout routines, why he never gets sick, ice ages, economics, philosophies of intermittent everything, and really dig into the details of a fascinating man. Enjoy! Show notes and links for this episode can be found at www.fourhourworkweek.com/podcast. This podcast is brought to you by Four Sigmatic. I reached out to these Finnish entrepreneurs after a very talented acrobat introduced me to one of their products, which blew my mind (in the best way possible). It is mushroom coffee featuring chaga. It tastes like coffee, but there are only 40 milligrams of caffeine, so it has less than half of what you would find in a regular cup of coffee. I do not get any jitters, acid reflux, or any type of stomach burn. It put me on fire for an entire day, and I only had half of the packet. People are always asking me what I use for cognitive enhancement right now -- this is the answer. You can try it right now by going to foursigmatic.com/tim and using the code Tim to get 20 percent off your first order. If you are in the experimental mindset, I do not think you'll be disappointed. This podcast is also brought to you by Audible. I have used Audible for years, and I love audiobooks. I have two to recommend: The Graveyard Book by Neil Gaiman Vagabonding by Rolf Potts All you need to do to get your free 30-day Audible trial is go to Audible.com/Tim. Choose one of the above books, or choose any of the endless options they offer. That could be a book, a newspaper, a magazine, or even a class. It's that easy. Go to Audible.com/Tim and get started today. Enjoy.

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Past guests on The Tim Ferriss Show include Jerry Seinfeld, Hugh Jackman, Dr. Jane Goodall, LeBron James, Kevin Hart, Doris Kearns Goodwin, Jamie Foxx, Matthew McConaughey, Esther Perel, Elizabeth Gilbert, Terry Crews, Sia, Yuval Noah Harari, Malcolm Gladwell, Madeleine Albright, Cheryl Strayed, Jim Collins, Mary Karr, Maria Popova, Sam Harris, Michael Phelps, Bob Iger, Edward Norton, Arnold Schwarzenegger, Neil Strauss, Ken Burns, Maria Sharapova, Marc Andreessen, Neil Gaiman, Neil de Grasse Tyson, Jocko Willink, Daniel Ek, Kelly Slater, Dr. Peter Attia, Seth Godin, Howard Marks, Dr. Brené Brown, Eric Schmidt, Michael Lewis, Joe Gebbia, Michael Pollan, Dr. Jordan Peterson, Vince Vaughn, Brian Koppelman, Ramit Sethi, Dax Shepard, Tony Robbins, Jim Dethmer, Dan Harris, Ray Dalio, Naval Ravikant, Vitalik Buterin, Elizabeth Lesser, Amanda Palmer, Katie Haun, Sir Richard Branson, Chuck Palahniuk, Arianna Huffington, Reid Hoffman, Bill Burr, Whitney Cummings, Rick Rubin, Dr. Vivek Murthy, Darren Aronofsky, and many more.

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