Metabolic Adaptive Dynamics (MAD) v1.0

This paper introduces Metabolic Adaptive Dynamics (MAD) v1.0, a physiologically operationalized framework for modeling human adaptive regulation under cognitive load. Unlike traditional stress models that emphasize peak physiological response, MAD defines adaptation as the measurable rate of autonomic recovery following perturbation. The model integrates three operational variables:Cognitive Load (P), measured via task complexity and NASA-TLX;Cognitive Capacity (V), measured via Working Memory (Operation Span);Autonomic Recovery (RR), measured through HRV (RMSSD) and GSR. The central hypothesis proposes that recovery rate is proportional to the ratio V/P and includes measurable coherence between sympathetic and parasympathetic recovery channels. MAD v1.0 is fully falsifiable and presented as a research program proposal rather than a completed empirical study. The document provides operational definitions, experimental design structure, and statistical modeling guidance for future laboratory validation.