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Performance Envelope

Meaning

The Performance Envelope is a conceptual boundary representing the full, sustainable range of physical and cognitive output an individual can reliably achieve, defined by the upper and lower limits of their current physiological capacity. This envelope is dynamically regulated by the endocrine system, where optimal hormonal balance and metabolic flexibility allow for its expansion, while chronic stress or hormonal decline leads to its contraction and reduced resilience. It serves as a crucial clinical metric for assessing true functional health and reserve.