It's our 400th episode celebration — Dr. Gundry asked 7 of the world's top longevity and wellness experts one powerful question: what is the ONE thing you can do today to improve your health? Four hundred episodes. Hundreds of conversations with the brightest minds in health, longevity, and human performance. To celebrate this milestone, Dr. Gundry went back to some of the most impactful guests in the show's history and asked them all the same question — and their answers are now collected into one incredible two-part series. This episode is for anyone who wants to learn: 🧊 Can a daily cold shower actually rewire your brain and boost your willpower? 🧠 What is "digital dementia" — and is your phone quietly destroying your memory? 😴 Why do the world's top longevity experts say sleep is the most underrated health tool? 👃 What happens to your brain and body when you breathe through your mouth instead of your nose? 🛡️ What are the 7 steps you can take right now to protect your brain from decline for life? Part 1 is a masterclass in daily health hacks you can start using immediately. It kicks off with a legendary biohacker sharing a brain hack that most people have completely backwards — and the science behind why leaning into discomfort might be the fastest path to sharper focus and emotional resilience. Watch Part 2 Here - https://youtu.be/OSVLZEtxEwQ Order Gundry MD Bio Complete 3 Now! - http://rebrand.ly/BC3-press Use code PODCAST25 for 25% off at checkout. Code valid until 4/9/27 on all regular-priced items. My Account and subscription price excluded. Can not be combined with other offers. Does not apply to bundles, devices and digital products. From there, a top functional medicine doctor reveals the inflammatory triggers hiding in almost everyone's diet — and narrows it down to just three things you can cut today for a noticeable difference. Then one of the most viral health voices on the planet breaks down the glucose tricks that are transforming how millions of people eat — with practical hacks that don't require giving anything up. You'll hear why one expert believes the simplest change is the healthiest, why a bestselling author is sounding the alarm on the toxic products most people use every single morning without thinking, and why a science journalist's research on one completely free daily habit produced numbers so staggering they rival some medications. 00:00 - Episode 400! We asked top experts ONE question 00:48 - Dave Asprey on why pain is actually good for you 07:09 - Dr. Will Cole on 3 inflammatory habits to cut today 10:01 - Glucose Goddess on why modern fruit isn't what you think 15:39 - The 4 glucose hacks you can start immediately 17:17 - Savory breakfast, vinegar, veggie starter and movement 19:17 - Cynthia Thurlow on the simplest health change you can make 29:14 - Darin Olien on the toxic products hiding in your daily routine 36:16 - Marta Zaraska on why kindness rivals medication for longevity 37:51 - The staggering numbers behind social connection and mortality 45:57 - James Nestor on the thing you do 20,000 times a day wrong 46:31 - A simple slow breathing technique to try right now 50:16 - Lewis Howes on taking inventory of your life 53:55 - What's coming in Part 2 with Jim Kwik, Arianna Huffington and Dr. Bredesen The episode closes with an expert who reveals you've been doing something 20,000 times a day your entire life — and you're probably doing it wrong. Plus, a performance coach shares a powerful self-inventory exercise that could rewire how you approach everything. And this is only Part 1. Part 2 features Jim Kwik on memory, Arianna Huffington on sleep, and Dr. Dale Bredesen on brain protection. Make sure you're subscribed so you don't miss it. Pick one thing from this episode and do it. Not tomorrow — today. Subscribe to all of our incredible guests — details and links below. 🔔 Subscribe to The Dr. Gundry Podcast for weekly episodes on gut health, longevity, and the hidden science behind how you live. GUEST CHANNELS & LINKS: Dave Asprey: https://www.instagram.com/dave.asprey/ Dr. Will Cole: https://www.instagram.com/drwillcole/ Jessie Inchauspé (Glucose Goddess): https://www.instagram.com/glucosegoddess/ Cynthia Thurlow: https://www.instagram.com/cynthia_thurlow_/ Darin Olien: https://www.instagram.com/darinolien James Nestor: https://www.instagram.com/mrjamesnestor/ Lewis Howes: https://www.instagram.com/lewishowes/ Marta Zaraska: https://www.zaraska.com/bio #DrGundry #Episode400 #Longevity #HealthHacks #DaveAsprey #GlucoseGoddess #JamesNestor #IntermittentFasting #Biohacking #WellnessTips #BrainHealth