HeyJaredSome Work, All Play
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!
- Indexed episodes, last 90 days
- 13
- Latest publication
- Sep 29, 2026
- Audience
- Checking…
- Earliest in this view
- Jul 7, 2026
Latest episodes
330. Carbs Before Short Efforts, Why Bicarb May Cause Long-Term Adaptations, The Brain-Body Connection, and Strength Work Before Races! (opens the original)
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We had some deep thoughts on cheese before this great episode! The main topic was a new study on sodium bicarbonate, showing performance benefits in a long, intense protocol. We zoom out to talk about potential connections to mitochondria... in rats (sometimes). Our theory: bicarb is driving some of the performance changes we are seeing via long-term adaptation processes within cells. And this one was full of awesome topics! Other topics: Megan’s deep thoughts on the uphill treadmill, the Toe Pr
329. Why You May Not Need Much Intensity, Running Economy v. Power, The Biggest Prize Purse in Trail Running, and Training and Longevity! (opens the original)
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We grunted our way through the day before this great episode! The main training topic was a new study on the dose-response curve for intensity, finding that only 11 minutes led to 80% of the benefits. We zoom out to talk about how training theory can shift away from the goal of accumulation of intensity. That study connected to another finding that just 12 minutes of vigorous-intensity activity correlated with major longevity improvements. There are a million confounders for both, but there may
328. Mysteries of Fatigue Resistance, New Science on the Lactate Shuttle, Carbs and Bone Health, and Fatigue Miles (opens the original)
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We had regrettable hot takes on cleaning exercise equipment before this great episode! The main training topic was on a new study highlighting the important of the lactate shuttle. We zoom out to discuss the implications for aerobic training. We also talked about mysteries around fatigue resistance! In the lab, you can’t predict fatigue resistance from fresh values (or from metabolic values during training). What are the implications? Our framework of “carb ox after fat ox” can provide some opti
327. How to Improve Fatigue Resistance, Weekly Mileage, Aerobic v. Anaerobic Systems, and Cycling Doses of Creatine (opens the original)
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We had deep thoughts on thirst traps before this great episode! There were three main training topics that all fit together. First, we connected fatigue resistance to fueling and the central nervous system, using David’s long bike past his endurance limits as some evidence. Next was a new study on aerobic v. anaerobic energy contribution, finding that the 50/50 turn-point was at just 78.6 seconds. This has massive implications for how we think about training, and why athletes should rarely be pu
326. HISTORY at UTMB with The Best Performance Ever (?!), Our Favorite Gel, The Future of Backyard Ultras, Heat Training in Cool Temps, and Nomio at Night! (opens the original)
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We got an extra dose of confidence before this great episode! The main topic was the history made at UTMB, with Ben Dhiman arguably running the best ultra race of all time. We also talked about being young and fit forever with Hans Troyer, the women throwing down across the board, and what we think we’re seeing with the monstrous performances at all the races. And this episode was full of fun topics! Other topics: low confidence Strava posting, our favorite gel, AI-driven review articles, a stud
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