Flexion Physiology V1.0: Structural Theory of Physiological Functioning

Flexion Physiology establishes a structural theory of physiological functioning defined independently of biological mechanisms, clinical measurement, or medical intervention.

Physiological function is formalized as a regime of admissible structural trajectories in the state space
X = (Δ, Φ, M, κ),
where Δ denotes differentiation, Φ structural tension, M irreversible memory, and κ structural viability.

The theory defines physiological norm as a bounded structural domain, distinguishes physiological function from compensated regimes, introduces physiological resource and reserve as measures of admissible future, and formalizes exhaustion and collapse as regime-level transitions.

A central result is the structural cost of observation: observation contracts admissible future trajectories and thereby consumes physiological resource, establishing a principled transparency limit compatible with physiological functioning.

Flexion Physiology is diagnostic, non-mechanistic, non-clinical, and non-prescriptive. It defines when physiological reasoning remains structurally valid and when it irreversibly ceases to apply.