Dr. Rhonda Patrick is a Ph.D in biomedical science and expert on nutritional health. Her podcasts and other videos can be found at FoundMyFitness.com --https://www.youtube.com/user/FoundMyFitness

Joe is joined by Brendan Schaub & Bryan Callen to watch the fights on January 15, 2017.

Wim Hof is a Dutch world record holder, adventurer and daredevil, commonly nicknamed the Iceman for his ability to withstand extreme cold.

Christine Hassler is an author, speaker, and life coach. Check out her podcast "Over It And On With It" available on iTunes.

Hank Shaw is a former restaurant cook and journalist, Hank Shaw is the author of three wild game cookbooks as well as the James Beard Award-winning wild foods website Hunter Angler Gardener Cook(http://honest-food.net/). His latest book "Bu...

Steven Rinella is an outdoorsman, author, and television host. He currently hosts "MeatEater" on the Sportsman Channel & Netflix, and a podcast also called "MeatEater" available on iTunes & Stitcher.

Zach Leary is a blogger/writer, a futurist, spiritualist, digital branding specialist and self proclaimed social theorist. He also is the host of the “It’s All Happening” podcast available on iTunes & at http://zachleary.com/

Joe is joined by Tom Segura & Bert Kreischer for Day 1 weigh-in of their weight loss challenge.

Joseph "Bazooka Joe" Valtellini is a former world kickboxing champion, who currently can be heard doing color commentary for Glory Kickboxing.

Shane Smith is a Canadian-American journalist. He also is the co-founder and CEO of the international media company VICE.

James Hetfield is a musician, singer and songwriter known for being the co-founder, lead vocalist, rhythm guitarist and main songwriter for the American heavy metal band Metallica.

Neal Brennan is a stand-up comedian, actor, writer, director and producer. He is known for co-creating and co-writing "Chappelle's Show" with Dave Chappelle.

Joe is joined by Brendan Schaub, Cameron Hanes, and Eddie Bravo to watch the fights on October 8, 2016.

John Anthony West is an author, lecturer, guide and a proponent of Sphinx water erosion hypothesis in geology. http://www.jawest.net/

Adam Greentree is a bowhunter and photographer from Australia.