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Some Work, All Play: Daily Summaries Delivered
by David Roche and Megan Roche
Five to ten topics, sometimes about running, with lots of love and enthusiasm and science. We dig deep into training, races, studies, pop culture, and much more! With Megan Roche, M.D. and David Roche!
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- 3 days ago1h 33m
313. Marathons v. Ultras, Fatigue Resistance Debates, Gene Editing Breakthrough, and Posture Impact on Blood Volume!
We put some cinder blocks under the head of our bed (for science!) before this great episode. A weird study just came out finding that head-up sleeping may increase red blood cell totals. We talk about what it means and what it doesn’t mean. Excuse us while we launch a cinderblock start-up.We also discussed a breakthrough in gene editing for cholesterol, and what that could mean for the future. The world is going to be so different in 50 years! Maybe by then, David can use CRISPR to be able to pronounce science words. And this one was full of fun topics! Other topics: our training log discussions, iron levels in athletes, breaking news on heat training from Unbound 200, a science debate on fatigue resistance terminology, and a study on glucose v. fructose. Plus, we answer questions on heat training in the car, clean sport for age group athletes, marathon v. ultra training, and health uncertainty.You’re going to learn a lot about what Megan would do for 40 grams of carbs. Totally normal stuff if you ask her!We love you all! HUZZAH!-David and MeganClick "Get 40% Off" button for 40% off at The Feed here: thefeed.com/swapBuy Janji's amazing gear: https://janji.com (code "SWAP")20% flash deal for the Wahoo Kickr Run treadmill on Wednesday: https://www.wahoofitness.com/devices/running/treadmills/kickr-run-buy (code “SWAP”)For training plans, weekly bonus podcasts, heart rate zones, articles, and videos: patreon.com/swap
- 1 weeks ago1h 23m
312. How Blood Volume Impacts Performance and Adapts Fast, The Scary Potential of Lactate Supplementation, The True GOAT, and The Circle Pit!
We basked in some amazing news before this great episode! The main topic was a breakdown of one of the most important elements of performance and health: blood volume. Studies show that blood volume can seem to act as a synonym for fitness, with one finding that 6 weeks of training gains can be reversed with a phlebotomy that returns blood volume to baseline levels. Positive adaptations can happen in a few days, and it clearly matters for performance. If any other intervention worked like that, you’d assume everyone would be talking about it all the time. But blood volume is not discussed often! We pull back the curtain on the science.We also talked about a new review article on exogenous lactate supplementation. It might be a brave new world in the next 5 years, but right now there are more questions than answers. We speculate!And this one was full of cool topics! Other topics: the shockingly good news Megan has received in recent heart tests, our disdain for the Enhanced Games, recent age group doping news, the Satisfy Circle Pit, the true GOAT of endurance, running v. biking, uphill treadmill workouts, and lots more.Yes, David actually hit himself for a joke on this episode. Podcasts are definitely the medium for physical and visual comedy.We love you all! HUZZAH!-David and MeganClick "Get 40% Off" button for 40% off at The Feed here: thefeed.com/swapBuy Janji's amazing gear: https://janji.com (code "SWAP")The Wahoo KICKR Run is the best treadmill on the market: https://www.wahoofitness.com/devices/running/treadmills/kickr-run-buy (code “SWAP”)For training plans, weekly bonus podcasts, heart rate zones, articles, and videos: patreon.com/swap
- 2 weeks ago1h 41m
311. The Science Episode! How To Stop Cramps, Fat Oxidation Changes, Missing Link Heat Training, The Difficulty of Physiology Data, and More
We talked about some of the strangest and coolest research topics in endurance sports for this episode! Basically, the science discussions went long, so we just ran with it.The main discussion was on how to stop cramps, laying out 10 theories. But put on your tin foil hats, because we think the cramping conspiracy runs deep. Our theory: cramping is connected to fatigue resistance is connected to all endurance performance, and thinking about cramp prevention might revolutionize all training theory even for athletes who never cramp. IT GOES DEEP!We also talked about a new missing link heat study, connecting altitude blood changes to long-term passive heat training. It was especially weird because the researchers were unsure of exactly why it happened. Those are the most fun study moments!Other topics: very short-term changes in fat max and fat oxidation (featuring the wildest figure we have seen in a long time), the difficulty of studies due to large error bars and small effect sizes, the crossover point in metabolic research, the incredible Dark Wizard documentary, and a question on relationships.For a clue about what was censored, here’s the hint: I caught mommy [bleeping] [bleepa blaus].We love you all! HUZZAH!-David and MeganClick "Get 40% Off" button for 40% off at The Feed here: thefeed.com/swapBuy Janji's amazing gear: https://janji.com (code "SWAP")The Wahoo KICKR Run is the best treadmill on the market: https://www.wahoofitness.com/devices/running/treadmills/kickr-run-buy (code “SWAP”)For training plans, weekly bonus podcasts, heart rate zones, articles, and videos: patreon.com/swap
- 3 weeks ago1h 34m
310. The Fatigue Resistance Episode! Rachel Entrekin Makes History at Cocodona, Women v. Men Durability, Fueling and the Central Nervous System, Brain Changes, and More
We had some HYPOTHESES for this amazing episode! The main topics all revolved around fatigue resistance (often called “durability” in the literature), which we think is the most exciting area of training theory and physiology. It started with Rachel Entrekin’s legendary overall win at the Cocodona 250, an event that explores some of the strangest and coolest parts of endurance.Our big theory: what we’re seeing in these wild ultras is directly connected to what we see in short distances. A new study looked at fatigue resistance variations between men and women, with some shocking results. We expand the scope to talk about the literature generally before going to some ideas for how it all might relate to the central nervous system....And how it relates to fueling. You could probably guess that we were going to talk about carbs.Plus, we answer questions about the culture of fueling for young athletes and feeling good after long runs!This one starts with a description of Megan’s health journey. The hottest vacation is apparently a 3-day stay in Boulder Community Hospital. Things are scary, but we’re holding onto hope for the future.We love you all! HUZZAH!-David and MeganClick "Get 40% Off" button for 40% off at The Feed here: thefeed.com/swapBuy Janji's amazing gear: https://janji.com (code "SWAP")The Wahoo KICKR Run is the best treadmill on the market: https://www.wahoofitness.com/devices/running/treadmills/kickr-run-buy (code “SWAP”)For training plans, weekly bonus podcasts, heart rate zones, articles, and videos: patreon.com/swap
- May 5, 20261h 21m
309. The Marathon that Changed Running, Ultra GOAT to Western States, Misconceptions about Training Volume, A Supershoe Lawsuit, and A Hydration Study!
We violated the warranty on ankle tape before this great episode! A main topic involved taking a step back to understand the historic context of Vinny Mauri’s 2:05 debut marathon. We think it’s a performance that signals a fundamental shift in the future of the sport for everyone, and we discuss why.We also talked about the exciting news that Jim Walmsley is heading to Western States with a sponsor slot. The GOAT is back! David had some terrible hot takes, and he’s now panicking that he didn’t give enough disclaimers that he doesn’t actually believe any of them.And this one had lots of fun topics! Other topics: unique uses of athletic tape, Abby Steiner sues Puma over their shoes, misconceptions about training volume, physiological testing of private parts, uninformed thoughts on the Kentucky Derby, a hydration review arguing that many athletes underhydrate outside of training, a study on ketones during hard efforts, using caffeine to increase heart rate, combining Nomio and bicarb, the wild world of zone compression, AI thoughts, and lots more.To us, you are all in the top 1%. That will make sense after you listen. Unfortunately.We love you all! HUZZAH!-David and MeganClick "Get 40% Off" button for 40% off at The Feed here: thefeed.com/swapBuy Janji's amazing gear: https://janji.com (code "SWAP")The Wahoo KICKR Run is the best treadmill on the market: https://www.wahoofitness.com/devices/running/treadmills/kickr-run-buy (code “SWAP”)For training plans, weekly bonus podcasts, heart rate zones, articles, and videos: patreon.com/swap
- Apr 28, 20261h 39m
308. Sub-2 Hour Marathon Fueling, The High Carb Plus Bicarb Era, Strides v. Plyometrics Study, Supershoe Evolution, and Iron Theories!
We made an unfortunate impulse purchase (you'll see) before this great episode! The main topic revolved around the world records at the London Marathon, including Sebastian Sawe’s 1:59:30 winning time. We discuss his mid-race fueling, bicarb use, shoes, and so much more. Plus, there was an important study measuring the differences in mechanical output between sprints, strides, and plyometrics. This study could be the missing link that identifies why strides are such a ubiquitous part of elite training approaches.And there were tons of fun topics! Other topics: the purchase David is not proud of, a game theory hypothetical, a high-carb case study, the amazing Women’s Gear Index, luxury gear, an existential question on life and training, a potential treadmill study, barefoot shoes, iron dosing theories, and lots more. Come for the carb talk, stay for the knowledge that David will occasionally have the worst takes you have ever heard. We take back every thought we head about pressing the red button.We love you all! HUZZAH!-David and MeganClick "Get 40% Off" button for 40% off at The Feed here: thefeed.com/swapFollow the Women’s Gear Index: https://www.instagram.com/womensgearindex Buy Janji's amazing gear: https://janji.com (code "SWAP")The Wahoo KICKR Run is the best treadmill on the market: https://www.wahoofitness.com/devices/running/treadmills/kickr-run-buy (code “SWAP”)For training plans, weekly bonus podcasts, heart rate zones, articles, and videos: patreon.com/swap
- Apr 21, 20261h 29m
307. A Mind-Blowing Boston Marathon, Jess McClain Runs 2:20 (!!!), and Studies on What Improves Endurance Performance!
We had just the right amount of Dunkin’ coffee (a barrel) before this great episode! The main topic was everything we learned at the Boston Marathon, highlighted by Jess McClain running 2:20:49 to break the American Course Record by over a minute. We break down our experience the most magical weekend!The most memorable moment for us: Around 30k, Jess fumbled a bottle (with a gel on it) right at the moment when the big moves were happening. What do you do at that moment? Jess turned around, grabbed it, and somehow bridged back to the leaders by surging under 5 min/mile pace. It was an unthinkable moment of perseverance and smarts that will go down in US running history. NO CARB LEFT BEHIND.And there were other amazing topics when we stopped being obsessed with Boston for a few seconds! Other topics: carbs in marathons, insights from marathon training, a study on cycling training that examines what overlaps with the best performances, a parallel running study, and lots more.Boston, we love you and your unexplained steam coming from the ground! History fact: Paul Revere listened to the SWAP Boston episode. HUZZAH!-David and MeganGet 25% off for The Feed’s birthday sale: https://thefeed.com/birthday-sale Click "Get 40% Off" button for 40% off at The Feed here: thefeed.com/swapBuy Janji's amazing gear: https://janji.com (code "SWAP")The Wahoo KICKR Run is the best treadmill on the market: https://www.wahoofitness.com/devices/running/treadmills/kickr-run-buy (code “SWAP”)For training plans, weekly bonus podcasts, heart rate zones, articles, and videos: patreon.com/swap
- Apr 14, 20261h 33m
306. How the GOAT Fuels, Single v. Double Workouts, Heat and Altitude Study, Caffeine Genotypes, and Building Bone Density!
We got overconfident with a shoe experiment before this great episode! It started with a discussion of race-day fueling of Tadej Pogacar (who might be the greatest endurance athlete ever). 250 grams of carbs and 1430 calories for breakfast?! We zoom out to talk about cycling fueling generally, along with possible gender differences.Then it was a big science discussion on a new study on heat and altitude that upended some of the older conventional wisdom. There seems to be increasing agreement across studies: heat training builds hemoglobin mass, and it may be additive when combined with altitude.And this one was full of awesome topics! Other topics: David’s shoe-alteration experiment that went horribly wrong, Megan’s tips for improving bone density, our upcoming Boston Marathon trip, a study on doing one workout versus two workouts in a single day, how caffeine genotype affect performance, supershoes and injury risk, how to think about sleep, and video games.Come for the science. Stay for the greatest roast of all time. David could be served with gravy at Thanksgiving after this one.We love you all! HUZZAH!-David and MeganClick "Get 40% Off" button for 40% off at The Feed here: thefeed.com/swapBuy Janji's amazing gear: https://janji.com (code "SWAP")The Wahoo KICKR Run is the best treadmill on the market: https://www.wahoofitness.com/devices/running/treadmills/kickr-run-buy (code “SWAP”)For training plans, weekly bonus podcasts, heart rate zones, articles, and videos: patreon.com/swap
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