Dr. Dominic "Dom" D'Agostino (@DominicDAgosti2) is an assistant professor in the Department of Molecular Pharmacology and Physiology at the University of South Florida Morsani College of Medicine, and a senior research scientist at the Institute for Human and Machine Cognition (IHMC). He has also deadlifted 500 pounds for 10 reps after a seven-day fast. Many of you sent enthusiastic follow-up questions after the last conversation we had, so Dom took the time to answer your most popular questions. In particular, he focused on ketosis, ketones, and the ketogenic diet -- so you can consider it the ketosis master class (especially if you combine both episodes, though this one does stand alone). It takes a few minutes for Dom to warm up -- so be patient! If you have an interest in these types of metabolic therapies, whether for performance enhancement, endurance, weight loss, or fighting cancer, diabetes, or any number of other maladies, you will find a gem within this episode. Enjoy! Show notes and links for this episode can be found at www.fourhourworkweek.com/podcast. This podcast is brought to you Gymnastic Bodies. This is the training system that I am most obsessed with at the moment. Coach Sommer appeared on a previous episode of the podcast, which turned into a sleeper hit. He is the former USA national team coach for men's gymnastics and creator of this bodyweight-based training system. I'm not easily impressed, and I have been completely blown away by the sophistication and the elegance of his programming. I have been using Gymnastic Bodies for just a few months now, and I already feel more flexible and stronger than I have in years. Check out GymnasticBodies.com/tim, where you'll find the Fundamentals course for diagnosing your weakest areas, those you can tweak for fast improvements. It is incredible. Take a look at GymnasticBodies.com/tim for more details and a large discount. This podcast is also brought to you by Four Sigmatic. I reached out to these Finnish entrepreneurs after a very talented acrobat introduced me to one of their products, which blew my mind (in the best way possible). It is mushroom coffee featuring chaga, which was introduced to me by Laird Hamilton, the king of big wave surfing. You just add the entire packet to hot water. It tastes like coffee, but there are only 40 milligrams of caffeine, so it's got less than half of what you would find in a regular cup of coffee. I do not get any jitters, acid reflux, or any type of stomach burn. It put me on fire for an entire day, and I only had half of the packet! People are always asking me what I use for cognitive enhancement -- right now, this is the answer. You can try it right now by going to foursigmatic.com/tim and using the code "Tim" to get 20 percent off your first order. If you are in the experimental mindset, I do not think you'll be disappointed. *** If you enjoy the podcast, would you please consider leaving a short review on Apple Podcasts/iTunes? It takes less than 60 seconds, and it really makes a difference in helping to convince hard-to-get guests. I also love reading the reviews! For show notes and past guests, please visit tim.blog/podcast. Sign up for Tim’s email newsletter (“5-Bullet Friday”) at tim.blog/friday. For transcripts of episodes, go to tim.blog/transcripts. Interested in sponsoring the podcast? Visit tim.blog/sponsor and fill out the form. Discover Tim’s books: tim.blog/books. Follow Tim: Twitter: twitter.com/tferriss  Instagram: instagram.com/timferriss Facebook: facebook.com/timferriss  YouTube: youtube.com/timferriss Past guests on The Tim Ferriss Show include Jerry Seinfeld, Hugh Jackman, Dr. Jane Goodall, LeBron James, Kevin Hart, Doris Kearns Goodwin, Jamie Foxx, Matthew McConaughey, Esther Perel, Elizabeth Gilbert, Terry Crews, Sia, Yuval Noah Harari, Malcolm Gladwell, Madeleine Albright, Cheryl Strayed, Jim Collins, Mary Karr, Maria Popova, Sam Harris, Michael Phelps, Bob Iger, Edward Norton, Arnold Schwarzenegger, Neil Strauss, Ken Burns, Maria Sharapova, Marc Andreessen, Neil Gaiman, Neil de Grasse Tyson, Jocko Willink, Daniel Ek, Kelly Slater, Dr. Peter Attia, Seth Godin, Howard Marks, Dr. Brené Brown, Eric Schmidt, Michael Lewis, Joe Gebbia, Michael Pollan, Dr. Jordan Peterson, Vince Vaughn, Brian Koppelman, Ramit Sethi, Dax Shepard, Tony Robbins, Jim Dethmer, Dan Harris, Ray Dalio, Naval Ravikant, Vitalik Buterin, Elizabeth Lesser, Amanda Palmer, Katie Haun, Sir Richard Branson, Chuck Palahniuk, Arianna Huffington, Reid Hoffman, Bill Burr, Whitney Cummings, Rick Rubin, Dr. Vivek Murthy, Darren Aronofsky, and many more. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Shay Carl (@shaycarl) got his first computer at age 27. He was a manual laborer for ages and uploaded his first YouTube video while on break from a granite counter top job. Flash forward to today: His SHAYTARDS channel now has roughly 2.3 BILLION views. Celebs like Steven Spielberg have appeared alongside Shay and his family. He co-founded Maker Studios, which sold to Disney for nearly $1 billion. He has been married 13 years and has 5 kids. He has lost more than 100 pounds since his overweight peak. Shay came to San Francisco to spend 2 days with me, we did a bunch of weird shit together (a lot of firsts for Shay), and we covered a ton, including: The most important decisions and inflection points in his life Tools of the trade and tips for creating on YouTube Favorite books, quotes, etc. that he lives by Stories he’s never shared anywhere before And much, much more Enjoy! Show notes and links for this episode can be found at www.fourhourworkweek.com/podcast. This podcast is brought to you by Wealthfront. Wealthfront is a massively disruptive (in a good way) set-it-and-forget-it investing service led by technologists from places like Apple. It has exploded in popularity in the last two years and now has more than $2.5B under management. Why? Because you can get services previously limited to the ultra-wealthy and only pay pennies on the dollar for them, and it's all through smarter software instead of retail locations and bloated sales teams. Check out wealthfront.com/tim, take their risk assessment quiz, which only takes 2-5 minutes, and they'll show you -- for free -- exactly the portfolio they'd put you in. If you want to just take their advice and do it yourself, you can. Well worth a few minutes to explore: wealthfront.com/tim This podcast is also brought to you by Born Fitness Coaching. Born Fitness Coaching offers concierge coaching, a 3:1 coach-to-client model that is customized to your needs, goals, and preferences. That means you receive unlimited interaction and coaching  with one certified coach for diet, one for fitness and one to keep track of all the rest (lifestyle, accountability and consistency.) Born Fitness Coaching is offering a special coaching experience based on the principles of The 4-Hour Body. You guys have asked me for this, and this is why I partnered with them for this offer. There are only 100 spots available because I insisted that quality never drops. Each Tim Ferriss Show listener receives $100 off per month. For full details, please visit BornFitness.com/tim.  *** If you enjoy the podcast, would you please consider leaving a short review on Apple Podcasts/iTunes? It takes less than 60 seconds, and it really makes a difference in helping to convince hard-to-get guests. I also love reading the reviews! For show notes and past guests, please visit tim.blog/podcast. Sign up for Tim’s email newsletter (“5-Bullet Friday”) at tim.blog/friday. For transcripts of episodes, go to tim.blog/transcripts. Interested in sponsoring the podcast? Visit tim.blog/sponsor and fill out the form. Discover Tim’s books: tim.blog/books. Follow Tim: Twitter: twitter.com/tferriss  Instagram: instagram.com/timferriss Facebook: facebook.com/timferriss  YouTube: youtube.com/timferriss Past guests on The Tim Ferriss Show include Jerry Seinfeld, Hugh Jackman, Dr. Jane Goodall, LeBron James, Kevin Hart, Doris Kearns Goodwin, Jamie Foxx, Matthew McConaughey, Esther Perel, Elizabeth Gilbert, Terry Crews, Sia, Yuval Noah Harari, Malcolm Gladwell, Madeleine Albright, Cheryl Strayed, Jim Collins, Mary Karr, Maria Popova, Sam Harris, Michael Phelps, Bob Iger, Edward Norton, Arnold Schwarzenegger, Neil Strauss, Ken Burns, Maria Sharapova, Marc Andreessen, Neil Gaiman, Neil de Grasse Tyson, Jocko Willink, Daniel Ek, Kelly Slater, Dr. Peter Attia, Seth Godin, Howard Marks, Dr. Brené Brown, Eric Schmidt, Michael Lewis, Joe Gebbia, Michael Pollan, Dr. Jordan Peterson, Vince Vaughn, Brian Koppelman, Ramit Sethi, Dax Shepard, Tony Robbins, Jim Dethmer, Dan Harris, Ray Dalio, Naval Ravikant, Vitalik Buterin, Elizabeth Lesser, Amanda Palmer, Katie Haun, Sir Richard Branson, Chuck Palahniuk, Arianna Huffington, Reid Hoffman, Bill Burr, Whitney Cummings, Rick Rubin, Dr. Vivek Murthy, Darren Aronofsky, and many more. See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.