Is there a nutrition secret to going harder, faster, stronger, and longer? There is a whole mythology built up around “eating to perform": protein powders, carbohydrate back-loading, intermittent fasting, post-workout macronutrient ratios, etc. We've been told that carbohydrates are bad for us? But don’t we need carbohydrates to fuel our high-intensity training sessions? One of my teachers used to say, “most people don’t deserve carbohydrates, you can have carbohydrates in your diet, but they have to be clean carbohydrates.” The best way to determine if it’s a clean carbohydrate is to ask the questions, “did a caveman have access to it?”