EP 758: Ox Blood to Aid Stations: The Wild Evolution of Endurance Nutrition

Trail Runner Nation · Dec 5, 2025 · 1h 4m

In this episode, we talk with exercise scientist Dr. Nick Tiller, author of the Ultrarunning Magazine article "Protein While Racing, Training Runs to Predict Performance & Progressing to Ultra." Starting from the wild story of Milo of Croton—an ancient athlete who drank ox blood and ate raw animal flesh—we trace how endurance nutrition has swung from carb-loading to fat-adaptation and ask where protein fits in today. Dr. Tiller explains why small amounts of protein during long races can help with muscle damage and taste fatigue, how to "train your gut" just like your legs, and why aid station…