CONCEPT
The Body Under Continuous Partial Attention
The systematic physiological cost of sustained attentional vigilance — measurable in cortisol, breath, posture, and prefrontal degradation — that the productivity dashboard cannot detect.
The body knows before the mind does. Stone's framework insists that the cost of continuous partial attention is borne first and most accurately in physiological systems: the respiratory rhythm disrupted by screen apnea, the sympathetic activation maintained for hours past its evolutionary design window, the cortisol accumulating without the physical action that would metabolize it, the prefrontal cortex degraded by the very chronic stress its restoration would require. The mind constructs narratives of productivity and competence. The body responds without rhetorical interest in the narrative. And the response — measurable in breathing patterns, heart rate variability, muscle tension, and cortisol profiles — constitutes a report on attentional quality the mind's narrative cannot override.
In The You On AI Field Guide
The mechanism is well documented in stress physiology, though its connection to attentional states is less widely appreciated. When the body enters a state of vigilance, the sympathetic nervous system engages — the autonomic branch that prepares the organism for action.