Pleasant’s Peak Heat Test v1 confirms thermal adaptation capacity under fasted conditions. Cardiovascular control remained aerobic despite high environmental load. Metabolic flexibility demonstrated by ketone escalation without HR instability. Peripheral fatigue exceeded central fatigue — indicating controlled stress exposure within adaptive window. Recovery monitoring recommended (RHR + REM next morning). Cardiovascular Avg HR: 130 bpm Max HR: 159 bpm HR recovery at summit: ~113 bpm No late-stage drift Thermal Load Avg Temp: 87°F Max Temp: 97°F Est. Sweat Loss: 3,941 ml Intake: 2.5L + sodium coverage Training Effect Aerobic: 3.7 Anaerobic: 0.0 Base-building stimulus maintained