Asker Jeukendrup | Endurance Nutrition Masterclass
The Freetrail Podcast with Dylan Bowman
Dylan Bowman
4.8 • 866 Ratings
🗓️ 18 December 2025
⏱️ 77 minutes
🧾️ Download transcript
Summary
04:15 What Makes You You?
09:28 Founding NeverSecond: A Science-First Approach
12:37 The Carbohydrate Revolution in Endurance Sports
15:09 Understanding Carbohydrate Absorption and Ratios
17:44 Nutrition Strategies for Varied Trail Running Distances
22:29 Gut Training: Assessing and Improving Carb Tolerance
27:49 Fasted Runs and Fat Metabolism
36:04 The Role of Carbohydrates in Performance
40:43 Understanding Nutrition for Racing Performance
45:15 Cooling and Its Impact on Nutrition Absorption
48:55 The Sodium and Electrolyte Debate
51:49 Caffeine: Benefits and Cautions
52:15 The Future of Health Monitoring in Athletes
59:47 Personal Stories and Lessons from Elite Athletes
1:00:15 Looking Ahead: The Future of Nutrition in Sports
- Grab a trail running pack from Osprey
- Use code FREETRAIL25 for 25% off your first order of NEVERSECOND nutrition at never2.com
- Go to ketone.com/freetrail30 for 30% off a subscription of Ketone IQ
Transcript
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| 0:00.0 | Hey, fam, welcome to the free trail podcast and happy holidays. Of course, I'm your loving host, Dylan Bowman, joined today by Oscar. You Can Drop a pioneering sports scientist whose work has been massively influential, |
| 0:25.7 | especially in the world of endurance nutrition. |
| 0:28.9 | Oscar's academic research and his science-first approach has had a huge global impact, |
| 0:35.2 | to say the least. |
| 0:36.0 | He is certainly one of the foremost authorities on this |
| 0:39.7 | subject, a subject that is front of mind for many trail runners globally. And here he is to share |
| 0:45.2 | his knowledge with the global trail community in addition to his academic consulting and speaking |
| 0:52.0 | work. Oscar is also a co-founder of Never Second, a leading supplier of |
| 0:57.1 | fueling and recovery products in endurance sports and, of course, also an important partner of us |
| 1:03.7 | here at Freitrail. I have to say this episode is genuinely why I love podcasting, just the opportunity to engage an extremely |
| 1:15.1 | intelligent and accomplished person in conversation. |
| 1:19.7 | It's so fun for me, and I'm grateful that Oscar would come and share his hard earned wisdom |
| 1:25.3 | so freely and so warmly. It was genuinely great to get to know him. |
| 1:29.7 | Some topics that we discuss in the show, his journey from athlete to scientist. We talk briefly |
| 1:34.9 | about the founding of Never Second and their science first approach. We talk about the carbohydrate |
| 1:40.2 | revolution that is sweeping endurance sport. We talk about nutrition strategies for |
| 1:46.1 | varied distances and terrain, specific for trail runners. We talk about gut training, assessing |
| 1:52.6 | and improving our carbohydrate tolerance. We talk about the usefulness of fasted runs and fat |
| 1:58.8 | metabolism. More generally, we talk about core temperature cooling and its impact on nutritional absorption. |
| 2:06.4 | We talk about the sodium and electrolyte debate, caffeine, both the benefits and the cautions, |
| 2:12.7 | whether or not blood tests are useful in capturing nutritional deficiencies and a lot more. It was so great |
| 2:20.4 | to have Oscar on the show. I hope you guys really enjoy it. I hope you have a great holiday season. You guys know that the best athletes in the sport trust never second for their nutrition |
... |
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