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PODCAST

Some Work, All Play

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!

sports running

All Episodes

01:43:40

296. How To Use Electrolytes, Zone 2 Problems,...

Some Work, All Play ·

2026/02/03

We cornered the market on mozzarella sticks before this awesome episode! The main topic involved our recommendations for electrolyte use in races and hard training. Sweat replacement is one of the strangest, least understood parts of athletic physiology. We give our guidelines from lots of real-world experimentation. And this one was full of incredible topics! Other topics: the happiest place on Earth, Megan’s first video filming and the year of vulnerability, David’s return to run, a new probiotic

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01:25:27

295. Debunking Low Carb Science for Endurance Athletes

Some Work, All Play ·

2026/01/27

We ordered extra-extra cheese before this deep-dive episode. The main topic took up most of the recording today, involving a new narrative review that argues for a low-carb approach for endurance athletes.The real-world performance benefits of carbs are clear for anyone who has traveled this path, but at the end of the day, who cares? It's just performance. The low-carb believers can get left behind and that's ok by us.The reason we are talking about this relates to health. The carb

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01:25:09

294. The Bicarb Revolution, Theory of Doubles,...

Some Work, All Play ·

2026/01/20

We loaded up on Vitamin D (and deodorant) before this fresh episode! The main topic was a new sodium bicarbonate study, tracking 40k bike time trial performance at altitude. It’s another brick in a really big scientific wall supporting the use of bicarb for performance. We zoom out to let you know why we think it’s also effective even in very long distances... and maybe at lower (cheaper) doses.We also talked about Vitamin D supplementation, using a big review study showing that over half of

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01:30:52

293. Ultra Runner of the Year Rankings, Unintentional...

Some Work, All Play ·

2026/01/13

We got our big juicy pumps for this amazing episode! We started by talking about a couple pieces of personal news, including a shockingly cool number 4 ranking in the Ultra Runner of the Year voting... and some tough health findings from an MRI. The newest shoe review is a medical boot. It’s still better than most trail shoes.The big science discussion was on a pair of studies on advanced female runners, with both finding low carbohydrate intake on training days. One of the studies on elite athletes

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01:26:35

292. The Countdown! Our 10 Most Important Training...

Some Work, All Play ·

2026/01/06

This was one of our all-time favorite episodes! We discussed takeaways from our 10 top endurance performance and health studies of 2025, full of science, recommendations, and debates. We don’t want to give away the countdown, but this one had everything! We’re talking fueling, training, brain health, colon health, and shoes. You just know there had to be a shoe study. Running shoes are 92% of David’s personality. Our mission was to summarize the science in a way that would help you take the research

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01:22:57

291. The Top 40 Predictions and Hot Takes for 2026!

Some Work, All Play ·

2025/12/30

This episode is full of the biggest predictions and most fun hot takes! We gathered 40 deep thoughts from listeners, and we had a blast responding to them all.Topics: just about everything related to running and endurance! We’re talking shoes, races, technology, media, training, strength work, culture, thermometers in sensitive places, and so much more.Thank you for being here for an incredible and unpredictable year. We love you all! HUZZAH!-David and MeganClick "Claim Your Sponsorship"

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01:26:02

290. No-Secrets Q+A on Running Form, Heat Training,...

Some Work, All Play ·

2025/12/23

We realized the perils of a hurricane-force tailwind before this amazing holiday episode! To celebrate the season, we opened up the mailbag to answer listener questions on all sorts of topics.Topics this week: what we’d save from a fire, a hot-tub experiment follow-up, Megan’s exciting news, whether we’d ever try triathlon, a vest that ejects gels, heat training submersion levels, hemoglobin A1C and REDs, iron supplementation, uphill treadmill effort and timing, scheduling rest days, a supplement

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01:29:27

289. Threshold Training Explained, How To Run...

Some Work, All Play ·

2025/12/16

We are still recovering from the laughs at the end of this episode! Before getting to that story, this one had a great training discussion on improving threshold performance. We dug down into why it’s more complex than just doing threshold workouts, and how you can put it into practice.There was also a new study on VO2 and its relation to aerobic and lactate thresholds. We broaden it out to address recent conversations on VO2 and longevity. David went for a joke that almost ended the podcast

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01:17:06

288. New Study on Kilian Jornet, The Incredible Story...

Some Work, All Play ·

2025/12/09

We had one of the most fun sports-watching weekends of our lives before this great episode! The main science topic was a new study on Kilian Jornet at Western States, breaking down his fueling, the metabolic demand, and lots more. Kilian is also the 2nd author on the paper! We’ve said it before and we’ll say it again: In a world of external monitors, be the rectal thermometer.We also talked about the amazing saga of USA Skimo’s Olympic qualification, featuring trail runners Anna Gibson and Cam

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01:36:53

287. Quad Dipsea Course Record! “No Secrets” on...

Some Work, All Play ·

2025/12/02

On Saturday, Megan broke a 15-year-old course record at Quad Dipsea! This episode shares everything about the journey in a “no secrets” style.The record was set by Caren Spore in 2010, back when Megan was playing field hockey and her biggest runs were wind-sprints. Years later, when Megan was in medical school in the Bay Area, the Quad became a bucket list event. But it never happened—a 28 mile race with 9000 feet of vertical gain and approximately three billion steps was just too much at that stage

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01:29:05

286. Why Passive Heat May Improve Performance, A...

Some Work, All Play ·

2025/11/25

We got way too invested in dog food models before this amazing episode! The main topic was a new study on passive heat training (like the hot tub or sauna) that acts as a missing link between theory and real-world proof. The study found that 5 weeks of hot tub training increases hemoglobin mass and VO2 max, which coincides with improved running economy. WOW! We break it all down.And this one was full of incredible topics! Topics: a date night game that should have stayed in date night, Hans Troyer

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01:29:01

285. The Strange Uncertainty of Hemoglobin A1c in...

Some Work, All Play ·

2025/11/18

We thought deeply about the societal implications of Paw Patrol before this amazing episode! The main science discussion involved a pair of strange, counter-intuitive wrinkles of physiology. The first was the sometimes paradoxical finding of higher hemoglobin A1c in many elite athletes. The second involved a new paper addressing a connection between suppressed thyroid hormones and low energy availability. Both phenomena demonstrate how physiology is a complex system. Also, it’s possible that

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01:31:30

284. Game-Changing Study on High Carb, Iron Levels...

Some Work, All Play ·

2025/11/11

We chocolatized our life before this amazing episode! The main topic was a new study on elite marathoners measuring responses to different carb intakes, finding a 2.6% lower oxygen cost at 120 grams per hour compared to 60 grams per hour. It showed massive carb oxidation rates at high outputs. In 10 years, we might look back on this study as a game-changing moment in the science of endurance performance. And this one had so many cool topics! Other topics: Megan’s biggest uphill treadmill threshold

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01:29:49

283. Fatigue Resistance in Marathons, High Carb in...

Some Work, All Play ·

2025/11/04

We stretched the ketones-as-robot-butt metaphor to its limits for this awesome episode! The main topic was a new study measuring fatigue resistance in marathons. Athletes completed lab tests prior to a marathon, with final results correlating with different attributes. Unfortunately, the athletes weren’t fueling during the protocol. What is this, 2005?! We broaden it out for conclusions that apply to everyone. Fatigue resistance without carbs is a stupid human trick, and there’s no need to play that

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01:34:20

282. Javelina 100! Golden Ticket Back to Western...

Some Work, All Play ·

2025/10/28

This weekend, we stepped into the fire at the Javelina 100 Mile to chase a golden ticket back to the Western States 100. This episode is the full story of the race, which ended with a golden ticket in 2nd place (behind Will Murray’s astounding course record), 27 minutes faster than last year’s win.The main discussion is about why the golden ticket presentation ended with a twist. David handed the golden ticket to Canyon Woodward, who finished less than 2 minutes back in 3rd place. Canyon deserves

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01:26:11

281. The Facts on Lead in Protein Powder, 22 Hot...

Some Work, All Play ·

2025/10/21

We loved recording this episode! The main topic was the article that rocked the athletic world last week, which asserted that many protein powders had unsafe amounts of lead contamination. We broke down the numbers to reach a much more nuanced conclusion that should help you feel better about it all. And that led to a broader discussion on the perils of advocacy being presented as science. We also talked about a shocking study on 45 asymptomatic people, which found labrum defects in 69% of hips

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01:37:16

280. Science of Energy Availability and Adaptation,...

Some Work, All Play ·

2025/10/14

We had so much fun with this episode (probably because it was a break from potty training)! The main topic was a study that found a correlation between energy availability and performance across a season in collegiate runners. It was a powerful, objective look about what happens when the body is underfueled. You know it’s a good study when it makes us add 2 more eggs to the post-podcast frying pan (10 eggs total).And this was truly one of our most joyous episodes ever! Other topics: how potty

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01:29:12

279. Strava v. Garmin Lawsuit, Uphill Treadmill...

Some Work, All Play ·

2025/10/07

We studied up on some beefs (Strava v. Garmin, Taylor v. Charli, pastrami v. sirloin) before this awesome episode! The main science topic was a new study evaluating low carb and high carb approaches, with and without caffeine. It’s another brick in the wall supporting higher carb for adaptation.We also talked about the Strava lawsuit! Last week, we defended Strava like the big fans we are, only for them to file suit against Garmin over decade-old patents a day later. It doesn’t seem to make sense

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01:32:42

278. The High-Carb Life, The Best Performances (of...

Some Work, All Play ·

2025/09/30

Our watches gave us some harsh (but necessary) feedback before this amazing episode! The main science topics were quick hitter studies on massive one-time Vitamin D intake, short-term heat acclimation protocols, and sodium bicarb. If you combine all of the protocols at once, that’s what we call a PARTY.We also talked about the World Trail Champs, which saw the highest-scored performances of all time. Our discussion included a hot take on course choices that is probably wrong and please don’t tell

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01:06:09

Leadville 100 Documentary “Nothing To Lose”...

Some Work, All Play ·

2025/09/25

The documentary “Nothing To Lose” is out today, telling the behind-the-scenes story of the 2025 Leadville 100! And we thought it was a great time to try something new. In this episode, we do a rewatch, providing commentary and hot takes throughout.You can listen to this episode as a standalone good-vibes celebration. OR, you can watch the documentary for a second time with this episode playing through your headphones like an old-school DVD commentary. It’s a celebration, and who are we to tell you

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301 results

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