Environmental and physiological data verified using wearable telemetry and metabolic sensing devices
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This Mount Baldy effort confirms engine stability under long-duration alpine stress. Despite strong wind exposure, technical terrain, and a 5+ hour duration, the hike produced a pure aerobic stimulus (Aerobic TE 3.6, Anaerobic TE 0) with negative heart rate drift (-5.6%), indicating improving cardiovascular efficiency rather than fatigue accumulation. Average heart rate held at 130 bpm with a 157 bpm max, demonstrating tight aerobic control at elevation. Exercise load (123) remained proportional to duration, not excessive relative to stressors. Metabolically, ketone dynamics show sustained autophagy activation: 1.5 ppm at wake and start 2.1 ppm at peak 7.1 ppm post-hike, confirming deep fat oxidation under load Environmental stress (wind + exposure) increased metabolic demand without forcing anaerobic spillover — a hallmark of adapted movement economy. Sleep data reinforces the interpretation: Pre-hike: stable autonomic tone, solid HRV, high sleep depth → adequate readiness Post-hike: reduced HRV and autonomic strain with preserved deep/REM sleep → active tissue repair and mitochondrial recovery Compared to prior weeks at similar elevation and terrain, this hike reflects consolidation of adaptations, not escalation of strain. TrailGenic™ signal confirmed: Long-duration alpine stress can be absorbed aerobically with improving efficiency when the engine is trained, fasted, and environmentally conditioned.