Joe Schilling is an American Muay Thai kickboxer and MMA fighter who competes in the super middleweight and light heavyweight divisions. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Brad Williams is an actor and stand-up comedian. Brad has a new special airing May 8 on Showtime called "Brad Williams: Fun Size" and he also hosts his own podcast called "About Last Night." Learn more about your ad choices. Visit podcastchoices.com/adchoices

Big Jay Oakerson is a stand up comedian and he also hosts his own show "Legion of Skanks Podcast" available on Spotify. http://bigjaycomedy.com Learn more about your ad choices. Visit podcastchoices.com/adchoices

Rich Roll is a plantpowered wellness advocate, bestselling author, ultra-athlete and host of "The Rich Roll Podcast," available on Spotify. http://www.richroll.com/ 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. His latest book "Waking Up: A Guide to Spirituality without Religion" is available now. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Greg Proops is a stand-up comedian, also well-known for his improv comedy on the show "Whose Line is it Anyway?". He currently hosts his own podcast called "The Smartest Man In The World", available on SPotify, and has a new book available in May 2015 called "The Smartest Book In The World". Learn more about your ad choices. Visit podcastchoices.com/adchoices

Aubrey de Grey is an English author and theoretician in the field of gerontology and the Chief Science Officer of the SENS Research Foundation. http://sens.org/ Learn more about your ad choices. Visit podcastchoices.com/adchoices

Remi Warren is a hunter, adventurer, and videographer. His new show "Apex Predator" is on the Sportsman Channel and available at http://apexpredator.tv Learn more about your ad choices. Visit podcastchoices.com/adchoices

Bryan Callen is an actor and stand-up comedian, and together with Brendan Schaub he also hosts "The Fighter & The Kid" podcast available on Spotify. http://bryancallen.com Learn more about your ad choices. Visit podcastchoices.com/adchoices

Jim Norton is a stand-up comedian, radio personality, author, and actor. His latest special "Contextually Inadequate" debuts April 24 on Epix. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Abby Martin is an American journalist and former host of "Breaking the Set" for RT America. Check out her work at http://mediaroots.org Learn more about your ad choices. Visit podcastchoices.com/adchoices

Alex Winter is a filmmaker and actor known best as Bill S. Preston, Esquire, from the "Bill & Ted's Excellent Adventure" franchise. His latest film "Deep Web" tells "the untold story of Bitcoin and The Silk Road" and is available on May 31 on Epix. http://www.deepwebthemovie.com/ Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe is joined by Eddie Bravo & Brendan Schaub to watch the fights on April 11, 2015. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Joe is joined by Eddie Bravo & Brendan Schaub to watch the fights on April 11, 2015. Learn more about your ad choices. Visit podcastchoices.com/adchoices

This episode is only available as audio. Joe and Bryan Callen recorded a podcast in a car while driving to a recent hunting trip. Bryan Callen is an actor and stand-up comedian. Together with Brendan Schaub he hosts "The Fighter & The Kid" podcast available on Spotify. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Les Stroud is a Canadian musician, filmmaker, and survival expert best known as the creator, writer, producer, director, cameraman and host of the television series Survivorman. New episodes of Surivorman begin airing on The Science Channel in April. Learn more about your ad choices. Visit podcastchoices.com/adchoices

This episode is only available as audio. Joe and Tony Hinchcliffe recorded a podcast a few weeks ago while in Sweden after doing two shows of comedy. Tony Hinchcliffe is a comedian, writer, and actor. He also hosts his own podcasts called “Kill Tony” with Redban, and it’s available on Spotify under "Deathsquad" and at http://Deathsquad.tv Learn more about your ad choices. Visit podcastchoices.com/adchoices

Josh Barnett is an MMA fighter, currently fighting in the UFC Heavyweight division. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Duncan Trussell is a stand-up comedian, and host of his own podcast “The Duncan Trussell Family Hour” available on Spotify. Learn more about your ad choices. Visit podcastchoices.com/adchoices

Andrew Hill, PhD, is a lecturer, scientist, explorer, and also the lead neuroscientist at TruBrain. Learn more about your ad choices. Visit podcastchoices.com/adchoices