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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

01:29:27

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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01:38:23

277. New Science on Fatigue Resistance, Leadville 100...

Some Work, All Play ·

2025/09/23

We had such a blast recording this great episode! The main science topic was a new study on improving fatigue resistance, which performance-matched athletes with different training approaches to see what led to better outcomes. The conclusion is a direct prescription for athletes looking to have better endurance. Being who we are, we throw some scientific turds in the study’s punch bowl.We also talked about the new Leadville documentary “Nothing to Lose,” which is coming out on Thursday. Yes, there

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01:37:09

276. Run Rabbit Run 50 Mile WIN! Megan’s Nutrition,...

Some Work, All Play ·

2025/09/16

Megan ran 8:21:51 to win the Run Rabbit Run 50 Mile, in one of the fastest times ever! This episode is a celebration of a wild and unexpected journey.She had only done one 50-mile race before, back in 2017. Then there was a heart issue, a hamstring surgery, pregnancy with Leo and Ollie, and so much more that the world will never see. She kept showing up though, even when her workout was walking 1 mph uphill.On Saturday, she showed up again, stepping into the unknown of a high-altitude mountain ultra

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01:25:54

275. Why Higher Calorie Needs May Stack Across...

Some Work, All Play ·

2025/09/09

We had a shocking change of feelings about shockingly ugly shoes before this amazing episode! The main topic was a pair of studies on energy expenditure and replenishment. The first was a case study that found massive energy needs beyond base metabolic rate for a full week after an ultra. We zoom out to discuss what that could mean for energy needs during hard training.The second study examined muscle v. liver glycogen replenishment, highlighting how difficult it can be to stay on top of energy

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01:40:02

274. UTMB Takeaways, How Low Carb Studies Miss the...

Some Work, All Play ·

2025/09/02

We loaded up on sympathy baguettes for UTMB racers before recording this great episode! The main topic was digesting everything from UTMB week, including Jim Walmsley reinforcing his GOAT status, Courtney Dauwalter reinforcing hers, the coolest coaching story ever from Scott Johnston (who coached Ruth Croft and Tom Evans to UTMB wins), training takeaways, and so much more! The science breakdown looked at a new study that is being used to argue that low carb doesn’t hurt high-intensity performance

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01:47:13

273. Q+A on Leadville 100 Pain Cave, Stealth Mode,...

Some Work, All Play ·

2025/08/26

This was one of the most fun episodes ever, answering all the questions on the science and vibes of the Leadville CR! As always, we didn’t hold back with any secrets... sometimes to a fault.Before that, we reviewed a new study abstract on colon cancer risk in runners, which could have implications for routine screening recommendations. We will keep you updated as the science evolves!Then it was onto the joy carousel with listener questions! Topics: pro runner status, sleep after ultras, our evolving

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01:50:43

272. Leadville 100 Mile Record, Again! The Full Story...

Some Work, All Play ·

2025/08/19

New course record at the Leadville 100 Miler in 15:12:30, 14 minutes ahead of last year. What just happened?! We are still processing it all, and this episode shares every detail while it’s all fresh in our sleep-deprived minds.2 weeks ago, David said there was zero chance that he was going to race Leadville. He was still processing the very public failure at Western States. He felt like he just wasn’t ready.Megan had other ideas. This episode tells the story of a surreal day that still seems a bit

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01:37:18

271. High Carb and Performance, Wild Science on What...

Some Work, All Play ·

2025/08/12

We conquered the WOOHOO yips before this amazing episode! The main science topic was on a new study that examined the causes of injuries in a 5205-athlete sample. The headline finding was relatively intuitive, but the sub-finding was so shocking that we are still picking our jaws up off the floor. We break it down and discuss how it may clarify training theory!And this one was full of our favorite topics! Other topics: the yips in athletes (and podcasters), Megan’s Aspen Mountain breakthrough, the

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294 results

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