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Nutrition: focus on the basics

Kilian Jornet · 1 Oct 2026

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  1. I believe that by the contrary, to build a sustainable diet for health and therefore performance, you must focus first on the fundamental principles, the 99% that drives almost all health, body composition, and performance outcomes, and only then fine tune the 1% of marginal and specific gains.
  2. The base of your nutrition should consist overwhelmingly of whole, single ingredient foods, those you can recognize from somewhere in nature: vegetables, fruits, whole grains, nuts, seeds, meat, fish, eggs, tubers, rice... Alongside single ingredient items, simple processed foods created through traditional methods (fermentation, culturing, or baking) provide immense nutritional value without the downside of additives.
  3. The most important thing when you finish a workout is to rehydrate, we often hear that we need to take protein after a workout (timing of protein intake doesn't really matter if is available thought the day) or to eat carbohydrates right after (if you're not super lean and are doing a very long and intense workout, the body available sources will be enough) and taking either of them without hydration will upset osmolarity and keep the toxins produced during exercise in your body for longer time.

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