Castuner

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!

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Episodios

340 episodios

  1. 335. Jess McClain Sprints to HISTORY at the NYC Marathon! Reactions and Training Theory from A Wild Weekend 1:33:15
  2. 334. Running Form and Fatigue Resistance, Bombshell Doping News, Lactate Gel Experimenting, and How Sweat Rate Changes Over Time! 1:27:31
  3. 333. Ways That We’ve Been Wrong, The Weirdness of Eccentric Muscle Contraction Adaptation, and The Reproducibility Crisis! 1:26:53
  4. 332. The Ultimate Carb Study, Chicago Marathon Hot Takes, The Shoe of Destiny, and Elliptical Training! 1:29:46
  5. 331. The Training Episode! 10 Lessons from Pro Road Runners, Vinny Mauri’s Unreal Approach, US 10k Champs, and Zone Compression in Cycling 1:28:54
  6. 330. Carbs Before Short Efforts, Why Bicarb May Cause Long-Term Adaptations, The Brain-Body Connection, and Strength Work Before Races! 1:21:10
  7. 329. Why You May Not Need Much Intensity, Running Economy v. Power, The Biggest Prize Purse in Trail Running, and Training and Longevity! 1:29:05
  8. 328. Mysteries of Fatigue Resistance, New Science on the Lactate Shuttle, Carbs and Bone Health, and Fatigue Miles 1:26:09
  9. 327. How to Improve Fatigue Resistance, Weekly Mileage, Aerobic v. Anaerobic Systems, and Cycling Doses of Creatine 1:39:18
  10. 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! 1:32:32
  11. 325. The Spicy Episode! Our Fears About AI Science, The $500 Trail Shoe, Age Group Doping, Zone Compression Theory, and Hog Watch 1:28:07
  12. 324. Why Longer Intervals May Be Worse (Sometimes), Carb Totals in Cycling, US Champ Doping, and Squats for Endurance Athletes 1:27:19
  13. 323. The Theory of Zone Compression, Surgery (Oh No), What Comes Next, and The New Big Supplement! 1:21:10
  14. 322. Why Exercise Physiology Wisdom Can Be Wrong, Doping in Ultrarunning, Bicarb in Long Races, and AI Controversy! 1:27:39
  15. 321. Why Hydration Unlocks Endurance, A Creatine Experiment, Tour de France Takeaways, and Athletic Identity Crisis! 1:36:58
  16. 320. Why POWER Makes Champions, The Key Downhill Cue, Overnight Drug Testing at Tour de France, What We’re Trying Now, and Adult Potty Training! 1:41:26
  17. 319. New Fueling Lessons from The Tour de France, Uphill Treadmill Threshold Theory, Prototype Shoe Ranting, The Hardrock 100, and Coaching Questions! 1:38:40
  18. 318. Our Surprising Take on Carb Loading, Why Even 10 Minutes Counts, Exogenous Lactate Supplementation, and Cross Training Science! 1:35:56
  19. 317. HISTORY at Western States 100! A Full Breakdown. Plus High Carb Study and Questions! 1:38:16
  20. 316. Why Western States 100 Records Are Getting Smashed, Z1 v. Z2 Training, AI Coaching News, and Competitiveness v. Ego! 1:41:40
  21. 315. How Lower Carb Arguments Miss The Mark, Answering Bicarb Questions, Overload Weeks, and Heat Training! 1:26:47
  22. 314. Carbs and Bone Health, A Reproducibility Crisis in Training Science, Wild Data on Post-Exercise Ketones, and Trail Supershoe Data! 1:34:04
  23. 313. Marathons v. Ultras, Fatigue Resistance Debates, Gene Editing Breakthrough, and Posture Impact on Blood Volume! 1:33:31
  24. 312. How Blood Volume Impacts Performance and Adapts Fast, The Scary Potential of Lactate Supplementation, The True GOAT, and The Circle Pit! 1:23:14
  25. 311. The Science Episode! How To Stop Cramps, Fat Oxidation Changes, Missing Link Heat Training, The Difficulty of Physiology Data, and More 1:41:56
  26. 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 1:34:02
  27. 309. The Marathon that Changed Running, Ultra GOAT to Western States, Misconceptions about Training Volume, A Supershoe Lawsuit, and A Hydration Study! 1:21:11
  28. 308. Sub-2 Hour Marathon Fueling, The High Carb Plus Bicarb Era, Strides v. Plyometrics Study, Supershoe Evolution, and Iron Theories! 1:39:23
  29. 307. A Mind-Blowing Boston Marathon, Jess McClain Runs 2:20 (!!!), and Studies on What Improves Endurance Performance! 1:29:58
  30. 306. How the GOAT Fuels, Single v. Double Workouts, Heat and Altitude Study, Caffeine Genotypes, and Building Bone Density! 1:33:44
  31. 305. The Theory of Downhills for Strength and Speed, AM v. PM Training Study, Bicarb Poisoning on Mt. Everest, and Moon Shots! 1:26:20
  32. 304. The Art of Steady Running, Pregnancy and Sponsorships, A Shocking TUE Dashboard, Heat and Heart Rate, Post-Exercise Ketones, and Bicarb! 1:33:31
  33. 303. The Weird Science of Carb Mouth Rinses, VO2 Max Limits, Fueling for Performance, Cross Training, and Cramp Prevention! 1:31:50
  34. 302. Mailbag Episode! The Fastest Shoe, Our Dream Study, Improving Testosterone Levels, Heat Training, Upper Body Lifting, and Lots More 1:09:54
  35. 301. What To Do Pre-Race, How Metabolism Works For Athletes, Training Races, Colon Health for Runners, and a Great US Half Marathon Update! 1:40:46
  36. 300. A Shocking Disgrace at the US Half Marathon Champs and What Needs To Happen Next, Learning From Elite Cycling Training, and Optimism Science! 1:29:14
  37. 299. The Best Underdog Story, LT1 v. LT2 workouts, 3 Tips for Health, Science on Supershoes and Slower Paces, and Structuring Training Weeks! 1:42:38
  38. 298. Ultra Training Philosophy, What Shorter Distances Can Learn from Ultras, Black Canyon 100k Records, a Weird Brain Study, and Metabolic Flexibility! 1:35:38
  39. 297. Long Runs Explained, The Training Shoe We Love, Black Canyon 100k Predictions, Shockwave Therapy, and Lindsey Vonn’s Courage! 1:33:07
  40. 296. How To Use Electrolytes, Zone 2 Problems, Strange VO2 Max Measures, The Weird World of Probiotics, and AI Training Thoughts! 1:43:40
  41. 295. Debunking Low Carb Science for Endurance Athletes 1:25:27
  42. 294. The Bicarb Revolution, Theory of Doubles, Vitamin D Supplementation, Stairmill Training, and Zone 2 Weirdness! 1:25:09
  43. 293. Ultra Runner of the Year Rankings, Unintentional Low Carb Studies, Health Update, Continuous Lactate Monitors, and Blood Tests! 1:30:52
  44. 292. The Countdown! Our 10 Most Important Training Studies of the Year 1:26:35
  45. 291. The Top 40 Predictions and Hot Takes for 2026! 1:22:57
  46. 290. No-Secrets Q+A on Running Form, Heat Training, Uphill Treadmill, Supplement Hypotheticals, Bicarb v. Nomio, Power Meters, and More! 1:26:02
  47. 289. Threshold Training Explained, How To Run Strides, VO2 and Longevity, and The Best Story We Have Ever Told! 1:29:27
  48. 288. New Study on Kilian Jornet, The Incredible Story of US Skimo, Shoe Review Rant, VO2 Max, and “Hot Girl Sweating” 1:17:06
  49. 287. Quad Dipsea Course Record! “No Secrets” on Megan’s Racing, Training, and Postpartum Journey 1:36:53
  50. 286. Why Passive Heat May Improve Performance, A Batman Study, Influencers, JFK 50 Mile, and Cool Persistence Hunting Science! 1:29:05