You have an immune system, but do you know where to find it and how it works? Dr. Grace Liu is on Bulletproof Radio this week to show you how to treat your gut for optimal performance. Hear an upgraded conversation about: probiotics, butyrate, evolution, and instructions on how to begin using resistant starch to biohack.

Dr. Grace Liu, also know by her blog name Dr. BG Animal Pharm, is a medical pharmacist with scientific, nutritional, and pharmacological training. She has studied plant biology and nutritional science, has a doctorate in pharmacy, is a certified Crossfit Nutritionist by Robb Wolf, and has a certificate from the Institute for Functional Medicine. She currently spends her time between the Bay Area and China.

From cleaning pools for mob bosses to saving the world through extreme endurance and Spartan Racing, Joe De Sena is the CEO and co-founder of the Spartan Race, a series of high endurance and terrifying obstacle courses. On this episode of Bulletproof Radio, entrepreneur and author, Joe De Sena talks about his journey to creating the Spartan Race and: the benefits of pushing yourself to dangerous limits, how to use thermogenesis for recovery, and the effects of ego on performance.  Joe also passes along some very useful running tips! Joe is an impressive guy with quite a few incredible stories. Enjoy!

Joe De Sena is what you might call an extreme endurance racer and radical limit crusher. An entrepreneur from 8 years old Joe has had a passion for life that moves the ball forward against all odds. Born in Queens NY to a yoga teaching, meditation practicing mother and an Italian father that was an uber-entrepreneur the author learned simple techniques for forging ahead no matter the odds. Find out how a young kid breaks out, builds multiple businesses, changes lives, and eventually partners with military SpecOps. Pre-order his new book, Spartan Up!: A Take-No-Prisoners Guide to Overcoming Obstacles and Achieving Peak Performance in Life.

Electromagnetic fields (or EMFs) are fundamental to the physical world. They occur naturally in the body, but are also man-made and have the potential to affect your performance negatively. Josh del Sol’s award-winning documentary, Take Back Your Power, addresses the performance-robbing effects of certain EMFs and takes a journey into the 2013 NSA spying scandal to expose what he calls “vast programs to monitor your personal communications using ‘smart’ meters.” Josh comes on Bulletproof Radio to discuss his feature film about EMF and radiation standards in America, smart meters, and a possible connection between autism and EMF levels. Check out the shownotes and watch the film online.

Josh del Sol is the Director and Producer of Take Back Your Power, his first feature film.  Born and raised near Vancouver BC, Josh is passionate about the growing movement of social awakening.  He has a vision for a more equitable social structure, with decentralized energy production and foundational values which honor the sanctity of life and human rights.  Josh finds inspiration in those of courage who speak truth to power, from a place of non-violence and vision, laying the foundation for necessary solutions. Follow @TBYPfilm on Twitter.  

Bestselling author and founder of the Institute for the Psychology of Eating, Marc David has made it his life’s work to help people do exactly what they say they want to do. On this episode of Bulletproof Radio, Marc goes deep into the psychology of eating and explains some of the easiest ways to hack your nutrition and perform better when you eat with integrity. You’ll discover why Marc says: “You cannot be a food addict,” along with how to make sense out of trauma, why the obesity paradox is a black eye in the face of science, how potato chip companies are capitalizing on our dental aggression habits, and a ton more!

Marc David is the Founder of the Institute for the Psychology of Eating, a leading visionary, teacher and consultant in Nutritional Psychology, and the author of the classic and bestselling books Nourishing Wisdom and The Slow Down Diet.  His work has been featured on CNN, NBC and numerous media outlets. The Institute for the Psychology of Eating is the world’s only teaching organization dedicated to a forward thinking, positive, holistic approach to nutritional psychology.

Dr. Cate Shanahan is using Bulletproof Diet principles to help pro athletes perform better. On this episode of Bulletproof Radio, physician, author, and LA Lakers Nutrition Director, Dr. Shanahan, talks how she transforms the diets of NBA stars like Dwight Howard and gets them to exchange nachos for charcuterie – one step at a time. Also hear Cate explain gluten on a molecular level and she makes a powerful argument for why consuming vegetable oil is like eating radiation. The show also includes information on: sugar addiction, milk proteins, and the benefits of eating, “meat on the bone”.

In addition to her thriving Napa Valley medical practice, Cate Shanahan, MD is Nutrition Director of the Los Angeles Lakers PRO Nutrition program. Before attending Robert Wood Johnson Medical School and specialty training at University of Arizona’s Family and Community Medicine, she studied genetics and biochemistry at Cornell. Her background enabled her to recognize the flaws in mainstream nutrition theories and fill in the gaps in most popular diets. She has worked with patients to achieve lasting weight loss, optimal sports performance, and elimination of medication dependence through a systematic approach. Like Dr. Cate on Facebook!

Bestselling author and renowned NYC journalist, AJ Jacobs is a living, breathing experiment. On this episode of Bulletproof Radio, AJ reveals his methods behind hacking into (what he calls) the three domains of self-improvement. Jacobs talks about his quest to become the smartest person, what happened when he lived (quite literally) according to the Bible, and his humble quest for bodily perfection. Also catch tips on how to act your way into a new way of thinking. Enjoy!

A.J. Jacobs is an author, journalist, lecturer and human guinea pig. He has written four New York Times bestsellers that combine memoir, science, humor and a dash of self-help. He is also editor at large at Esquire magazine, a commentator on NPR and a columnist for Mental Floss magazine. His first book is called The Know-It-All: One Man’s Humble Quest to Become the Smartest Person in the World (Simon & Schuster, 2004). The memoir — which spent two months on the New York Times bestseller list — chronicles the 18 months Jacobs spent reading the entire Encyclopedia Britannica in a quest to learn everything in the world. It was praised by Time magazine, Newsweek, Vanity Fair, USA Today, Janet Maslin in the New York Times and AJ’s uncle Henry on Amazon.com. Follow him on Twitter @ajjacobs!

Olympian turned NBC analyst, Bree Schaaf talks staying Bulletproof while at the Sochi Olympics last month. Bree has been competing in sliding sports for the past 12 years. Just now back from Russia, Bree’s on Bulletproof Radio to discuss skeleton bobsled racing, her kickass routine for high performance, how she recovered from hip surgery, selenium toxicity, and more. Hear about how she didn’t let even the TSA keep her from eating a Bulletproof Diet during the games.

The former Portland State University Volleyball player spent her first five years on ice as a skeleton athlete before becoming a bobsled pilot.  Schaaf has earned 13 top-10 finishes on the World Cup circuit and finished fifth with brakeman Emily Azevedo at the Vancouver 2010 Olympic Winter Games. Schaaf is the first American female to compete in both a Skeleton World Championships as well as Bobsled World Championships.  Coming up just short at Olympic Trials this year, Schaaf not only attended the Sochi 2014 Olympics as alternate, but made her NBC Olympics broadcast debut as a skeleton analyst and sliding sports correspondent.

One of the 50 fittest women in the world comes on Bulletproof Radio to talk about how strong is the new skinny and how she became a major player in the CrossFit community. On this episode of Bulletproof Radio you’ll get a look inside the mind of a real CrossFit master and she’s sassy too. Alverson talks about her strict adherence to a Paleo diet, her thoughts on women and ketosis, and if she thinks it’s okay to do CrossFit while pregnant. Get the show below!

Shana Alvesrson owns Crossfit East Decatur in Georgia. She is a level 1 Certified CrossFit trainer as well as a Level I CrossFit Running & Endurance Certified. Shana also trains in CrossFit Olympic lifting, movement & mobility, gymnastics, and Crossfit kids. Her passion for the gym began at 15 after discovering how nutrition and exercise elevated her mood. She has been teaching people how to exercise since 1995, and in 2007 began her CrossFit training career. Catch her kicking ass a CrossFit East Decatur and on Twitter @ShanaAlverson.

Have you ever experienced a flow state? It’s the superhuman state of high performance when everything is in-sync and you’re kicking ass at life? Bestselling author of The Rise of Superman, Steven Kotler, will teach you how to find your flow state and stay there. In this episode of Bulletproof Radio, Kotler breaks down the 3 psychological conditions for flow state, the 4 stages of flow, and how to turn it on and off. Steven also tells a great story about his own flow state experiences as a writer, his battle with Lyme disease, and discusses, The Flow Genome Project.

Steven Kotler is a New York Times bestselling author, award-winning journalist, and co-founder and director of research for the Flow Genome Project. His books include The Rise of Superman, Abundance, A Small, Furry Prayer, West of Jesus, andThe Angle Quickest for Flight. His work has been translated into thirty languages and his articles have appeared in more than seventy publications, including the New York Times Magazine, Atlantic Monthly, Wired, and Forbes. You can find him online at stevenkotler.com or writing Far Frontiers, a blog for Forbes.com: www.forbes.com/sites/stevenkotler.