Kyle Dunnigan is a writer, actor and comedian. Check out his hilarious Instagram page: https://www.instagram.com/kyledunnigan1/ Learn more about your ad choices. Visit podcastchoices.com/adchoices

Dennis McKenna is an ethnopharmacologist, author, and brother to well-known psychedelics proponent Terence McKenna. His new book "Ethnopharmacologic Search for Psychoactive Drugs: 50 Years of Research (1967-2017)" is available here: http://www.synergeticpress.com/shop/ethnopharmacologic-search-psychoactive-drugs-50-years-research/ Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe sits down with the head coach of Tristar Gym, Firas Zahabi. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Kyle Kingsbury is a retired professional mixed martial artist. He is currently the Director of Human Optimization at Onnit. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Dave Rubin is a stand-up comedian, talk show host, and television personality. He is the creator and host of political comedy talk show “The Rubin Report” available on Spotify. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Adam Frank is a physicist, astronomer, and writer. His scientific research has focused on computational astrophysics with an emphasis on star formation and late stages of stellar evolution. His new book "Light of the Stars: Alien Worlds and the Fate of the Earth" is available now on Amazon. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe is joined by former Bellator Featherweight champion Daniel Straus & kickboxer/MMA fighter Joe Schilling. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Tom Papa is a comedian, actor, writer and television/radio host. His new book "Your Dad Stole My Rake: And Other Family Dilemmas" is available now on Amazon. https://www.amazon.com/Your-Dad-Stole-My-Rake/dp/1250144388 Learn more about your ad choices. Visit podcastchoices.com/adchoices

Ryan Sickler is a stand up comedian and co-host of "The Crabfeast Podcast" available on Spotify. https://www.thecrabfeast.com/ Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe is joined by UFC Bantamweight fighter "Sugar" Sean O'Malley & welterweight fighter & coach Tim Welch. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Jesse Itzler is an entrepreneur, author, and founder of The 100 Mile Group. Check out his new book "Living With The Monks" available at http://jesseitzler.com https://www.instagram.com/jesseitzler https://twitter.com/the100MileMan Learn more about your ad choices. Visit podcastchoices.com/adchoices

Erik Griffin is a stand-up comedian, writer and actor. His new special "AmERIKan Warrior" premieres on June 8 on Showtime, and he can be also be seen in the Showtime show "I'm Dying Up Here." Learn more about your ad choices. Visit podcastchoices.com/adchoices

Candace Owens is the communication director for Turning Point USA, which is an American conservative nonprofit organization whose stated mission is "to educate students about true free market values." Learn more about your ad choices. Visit podcastchoices.com/adchoices

Robert Schoch is an associate professor of Natural Sciences at the College of General Studies, Boston University. He has been best known as a proponent of the Sphinx water erosion hypothesis. Check out links to more of his work at http://robertschoch.com Learn more about your ad choices. Visit podcastchoices.com/adchoices

Kevin Smith is a filmmaker, actor, comedian, public speaker, comic book writer, author, and podcaster. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Donnie Vincent is a biologist, explorer, conservationist, sportsman, and filmmaker. Links to some of his recent work is available at: https://www.donnievincent.com Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe is joined by UFC fighter Cat Zingano. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe sits down with Eddie Bravo & Brendan Schaub to watch the fights on May 27, 2018. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Michael Pollan is an author, journalist, activist, and professor of journalism at the UC Berkeley Graduate School of Journalism. His new book "How To Change Your Mind" is available now. "How To Change Your Mind" on Amazon: https://www.amazon.com/Change-Your-Mind-Consciousness-Transcendence/dp/1594204225/ref=asap_bc?ie=UTF8 Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe is joined by Georges St-Pierre discuss fighting and more. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe is joined by Robin Black to discuss the MMA fight world and breaking down some upcoming fights. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Ben Greenfield is a Coach, Author, Speaker, ex-Bodybuilder and Ironman Triathlete. In 2008 he was voted as the Personal Trainer of the Year by the National Strength and Conditioning Association (NSCA) and recognized as the top 100 Most Influential People in Health in 2013. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Howard Bloom is an author and he was also a publicist in the 1970s and 1980s for singers and bands such as Prince, Billy Joel, and Styx. His latest book "How I Accidentally Started The Sixties" is available now on Amazon -- https://www.amazon.com/How-I-Accidentally-Started-Sixties/dp/1945572914/ref=la_B001KIRZ9U_1_6?s=books&ie=UTF8&qid=1526939581&sr=1-6 Learn more about your ad choices. Visit podcastchoices.com/adchoices

Theo Von is a stand-up comedian, television personality, host, and actor. Check out his special on Netflix called "No Offense" & his podcast called "This Past Weekend" available on Spotify. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Tim Kennedy is a Ranger, sniper, Special Forces Operator, and recently retired UFC Fighter. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe sits down with Big John McCarthy to discuss MMA history. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Steven Tyler is a singer-songwriter, multi-instrumentalist, best known as the lead-singer of Aerosmith. He is also the subject of new documentary called "Steven Tyler: Out On a Limb" available to stream on demand. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Matt Taibbi is a journalist and author. He has reported on politics, media, finance, and sports, and has authored several books including: Insane Clown President, Griftopia, and The Business Secrets Of Drug Dealing. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Mike Baker is a former CIA covert operations officer. Currently he is the president of Diligence LLC, a global intelligence and security firm. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Brian Redban is a comedian and the founder of the Deathsquad podcast network available on Spotify under "Deathsquad." Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe sits down with former two-time Bellator Lightweight Champion Michael Chandler. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Cameron Hanes is a bowhunting athlete, “training intensively each and every day to become the Ultimate Predator” and he also has a podcast available called "Keep Hammering with Cameron Hanes." Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe sits down with Eddie Bravo & Brendan Schaub to watch the fights on April 28, 2018. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Zach Bitter is an endurance athlete, ultramarathon runner and coach. He holds the current American 100-mile record at 11:40:55. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Abby Martin is a journalist and host of the "The Empire Files" -- http://theempirefiles.tv Learn more about your ad choices. Visit podcastchoices.com/adchoices

Matthew Walker is Professor of Neuroscience and Psychology at the University of California, Berkeley, and Founder and Director of the Center for Human Sleep Science. Check out his book "Why We Sleep: Unlocking the Power of Sleep and Dreams" on Amazon. https://www.amazon.com/dp/1501144316 Learn more about your ad choices. Visit podcastchoices.com/adchoices

Peter Attia is the founder of Attia Medical, PC, a medical practice with offices in San Diego and New York City, focusing on the applied science of longevity. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe sits down with UFC Lightweight fighter Kevin Lee to discuss his recent fight. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Colion Noir is a gun rights activist, lawyer, member of the National Rifle Association, and host of the NRA Freestyle web series NOIR. https://www.youtube.com/channel/UC193r5YXcpQJV34N99ZbhzQ Learn more about your ad choices. Visit podcastchoices.com/adchoices

Sam Harris is a neuroscientist and author of the New York Times bestsellers, The End of Faith, Letter to a Christian Nation, and The Moral Landscape. Maajid Nawaz is a British activist, author, columnist, radio host and politician. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Michael Hunter is the chef and owner of Antler Kitchen in Toronto. http://www.antlerkitchenbar.com/ Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe sits down with UFC Light Heavyweight fighter Alexander Gustafsson. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Boyan Slat is an inventor, entrepreneur and former aerospace engineering student. He is the founder of The Ocean Cleanup organization: https://www.theoceancleanup.com/ Learn more about your ad choices. Visit podcastchoices.com/adchoices

Matt Farah is a car enthusiast and the host of "The Smoking Tire" seen on YouTube and also a podcast available on Spotify. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe is joined by UFC Heavyweight Champion & three-time King of Pancrase world champion, Bas Rutten. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Chris Bell is a writer, director, and filmmaker known for the documentaries “Bigger, Stronger, Faster” and  “Prescription Thugs”. Mark Bell is an elite powerlifter and owner of Team Super Training Gym in Sacramento, CA. Together they are currently working on an untitled new project about food and health. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe sits down with Brendan Schaub to discuss upcoming fights. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Liz Phair is a singer, songwriter, and guitarist. The 25th Anniversary box set celebrating her 7 LP's "Girly Sound to Guyville" releases on May 4 and she will also be touring this summer. Learn more about your ad choices. Visit podcastchoices.com/adchoices