Metabolic Flexibility

Metabolic
By: Mike Ye x Ella (AI)
September 17, 2026
Intermediate

Capacity to change fuel use with demand and availability; not directly established by TrailGenic’s breath-acetone readings alone.

Definition revised September 17, 2026 · Mike Ye × Ella

Current TrailGenic Usage

Capacity to change fuel use with demand and availability; not directly established by TrailGenic’s breath-acetone readings alone.

TrailGenic records fasted/fed state, fueling, activity, breath acetone, and other available context. Ketone persistence and low heart rate do not prove insulin sensitivity, substrate-switching efficiency, or a metabolic-health outcome. A mechanism claim requires measurements suited to that claim.

How to Use the Term

Keep context, behavior, recorded response, follow-up, and interpretation distinguishable. Ella examines longitudinal patterns and alternatives; a decision rule remains dated and revisable.

Shared terminology · Measurement limits · Methodology

Related Records and Historical Context

Linked records may use earlier terminology; the evidence boundaries above govern this definition.

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