Fuelin Sessions Episode 26: 3:05hr Marathon Fueling: A complete fueling & training breakdown with Jan Frodeno
Sep 11, 2025
Explore the fascinating world of endurance fueling as Scott and Jan dive into marathon training. They discuss the impact of high-carb versus high-fat diets, emphasizing personalized nutrition. The conversation covers the importance of pre-race fueling and the balance of training volume and recovery. Learn about health testing methods, the evolving landscape of sports supplements, and effective marathon nutrition strategies. Enjoy anecdotes about sandwiches and running joy, highlighting the camaraderie among athletes.
AI Snips
Chapters
Transcript
Episode notes
High-Fat Diet Nearly Broke Training
- Scott joined a high-fat, low-carb study and became extremely lean but irritable and unable to complete high-intensity sessions.
- He reversed back to high-carb because the approach nearly
Carbs Affect Recovery And Mood
- Scott's HRV dropped and resting heart rate rose while low on carbs, suggesting carbohydrate restriction harmed recovery and immunity.
- He suspected carbohydrate deficiency pushed him toward RED-S-like symptoms and lower mood.
Low-Volume Can Work With Smart Cross-Training
- Low weekly training hours can still yield big gains when combined with smarter cross-training and targeted sessions.
- Scott credited increased bike volume for maintaining cardio while reducing running load.