Nutritional requirements and useful timing strategies change with the type, intensity, duration, and recovery demands of physical activity.

This page isolates one claim from the wider argument of The Human OS Manual.

The classification describes the evidence supporting this claim, not the Human OS framework as a whole.

The joint position statement from the Academy of Nutrition and Dietetics, Dietitians of Canada, and ACSM describes nutrition strategies that vary with training, competition, and recovery scenarios.

The statement is oriented toward athletic performance and does not imply that every ordinary fluctuation in activity requires deliberate dietary manipulation.

EN 17.5 contains two separate ideas. The Evidence Map splits them so population adaptation and demand-sensitive nutrition do not become one compound claim.

Broad, mature principles of human biology, behavior, or regulation supported across a substantial body of research.

Sources are listed according to the role they play in this claim. One source may provide direct support, another may explain a mechanism, establish a limitation, or prevent an interpretation from becoming broader than the evidence allows.

The printed book preserves the claim inside the argument that gives it meaning. These references connect the current digital record to the first-edition evidence trail.

This claim connects to the following parts of the Human OS architecture. The module labels locate the claim inside the framework; they do not imply that the research source validates the architecture itself.