logo
episode-header-image
Dec 18
1h 58m

Kevin Hall, PhD On The Science & Politic...

Rich Roll
About this episode
Kevin Hall, Ph.D., is a physicist-turned-nutrition scientist whose rigorous research has upended some of our most sacrosanct beliefs about metabolism, dieting, and weight loss. This conversation explores why diets fail, the truth behind the "slow metabolism" myth, how ultra-processed foods hijack our biology, and why the 800-pound gorilla driving the obesit ... Show More
Up next
Dec 29
Best of 2025 (Part Two): The Year’s Most Enduring Insights
1h 51m
Dec 22
Best of 2025 (Part One): Conversations That Shaped Us
Happy holidays from the RRP mothership. Another year in the rearview. Time for what's become one of my favorite traditions, our annual “Best Of.” 12 years running now. This year was packed with an astonishing array of guests—too many to feature here. Part 1 revisits the year's mo ... Show More
1h 46m
Dec 15
Let’s Make The World Wildly Better: Rutger Bregman On Moral Ambition
Rutger Bregman is a Dutch historian, bestselling author, and the guy who went viral telling Davos billionaires to pay their taxes. This conversation is a salve for the crisis of meaning percolating through modern life. We explore Rutger's pragmatic antidote—moral ambition—and dis ... Show More
2 h
Recommended Episodes
Jan 2025
#896 - 3.25M Q&A - Marriage Plans, Beautiful Women & Chris Bumstead
I hit 3.25 million Subscribers on YouTube!! To celebrate, I asked for questions from YouTube, Twitter and Instagram, so here’s another 90ish minutes of me trying to answer as many as possible. Expect to learn my thoughts on the Fin vs The Internet episode, what my favorite band I ... Show More
1h 41m
May 2022
#128 Life, Death, and Meaning (Bret Weinstein & Heather Heying DarkHorse Livestream)
<p> </p><p>In this 128th in a series of live discussions with Bret Weinstein and Heather Heying (both PhDs in Biology), we discuss the state of the world through an evolutionary lens.</p><p> </p><p>This week, we discuss Viktor Frankl’s Man’s Search for Meaning: What is it to be h ... Show More
1h 40m
Jul 2025
#972 - 3.7M Q&A - Fatherhood Plans, Medical Update & New Hairstyle
I hit 3.7 million Subscribers on YouTube!! To celebrate, I asked for questions from YouTube, X, and Instagram, so here’s another 90 minutes of me trying to answer as many as possible. Expect to learn all about my new hairstyle, how to best deal with procrastination, which people ... Show More
1h 32m
Jun 2025
#952 - Alex Hormozi - 41 Harsh Truths Nobody Wants To Admit
Alex Hormozi is a founder, investor and an author. Alex’s Twitter has been one of my favourite sources of insights over the last few years. Today we get to go through some of his best lessons about life, human behaviour, psychology, business and resilience again. And as always th ... Show More
3h 59m
Sep 2024
#835 - 2.5M Q&A - Naval Ravikant, Quitting Alcohol & Having Kids
I hit 2.5 million Subscribers on YouTube!! To celebrate, I asked for questions from YouTube, Twitter and Instagram, so here’s another 90 minutes of me trying to answer as many as possible. Expect to learn who I’m thinking of bringing on as guests on the left and right, how to le ... Show More
1h 20m
Nov 2020
Rich Roll - Ultra-Endurance Athlete On How to Be Healthy
<p>On today’s episode, Ryan talks with athlete and wellness advocate Rich Roll about how our leadership has reacted to the coronavirus pandemic, the modern wellness community, the pros and cons of psychedelic therapy, and more.</p><p>Rich Roll is an author, wellness advocate, ath ... Show More
1h 6m
Jan 2025
Ask Sami Anything: Fitness, Relationships, and Careers
<p>In this solo episode, Sami Clarke sits down to answer your most burning questions and give you a peek into her world. From self-love and embracing her authentic self to sharing her favorite moments from her wedding and upcoming honeymoon plans, this is your chance to catch up ... Show More
39m 6s
Feb 2024
Nate Klemp on How You Embrace Openness in Your Daily Life EP 416
<p><a href="https://passionstruck.com/passion-struck-book/" target="_blank">https://passionstruck.com/passion-struck-book/</a> - Order a copy of my new book, "Passion Struck: Twelve Powerful Principles to Unlock Your Purpose and Ignite Your Most Intentional Life," today! Picked b ... Show More
1h 3m
Nov 13
#1019 - Fin Taylor & Horatio Gould - History is a Freakshow
Fin Taylor is an English comedian, writer and podcaster. Horatio Gould is also an English comedian, writer, and podcaster. History is basically one long reminder that no matter how bad your day is, someone in the past was probably getting catapulted off a castle wall. Feel better ... Show More
1h 32m
Jul 2025
David Sinclair on Unlocking the Secrets to Reversing Aging
Tom answers questions from the community. [ORIGINAL AIR DATE: 9-19-19]. QUESTION TOPICS Tom goes into how detail about diaphragm breathing [4:38] Why Cal Newport's limit of how long someone can do 'deep work' is a limiting belief [7:44] How to cultivate a passion when you have mu ... Show More
51m 23s