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Performance Input Hierarchy

Meaning

The Performance Input Hierarchy is a clinical model that structures the various physiological and lifestyle factors contributing to peak human performance based on their foundational importance and potential magnitude of impact. This hierarchy posits that primary inputs, such as sleep and circadian rhythm, must be optimized before secondary inputs, like specific supplements or advanced training protocols, can yield their full benefit. In hormonal health, this means correcting fundamental issues like HPA axis dysregulation or chronic sleep debt before expecting optimal results from targeted hormone therapies. It provides a systematic, evidence-based roadmap for intervention.