IMSAFE Checklist Stress & Fatigue: Ultrahuman Ring Air HRV Data for Pilots (2026)

Ultrahuman Ring Air Review: A Pilot’s 168-Day Assessment Aviation has one of the most rigorous pre-flight safety protocols in existence: the IMSAFE checklist. Before touching a throttle, every pilot runs through it: Illness, Medication, Stress, Alcohol, Fatigue, Emotion. Over the past five months, I cross-referenced 168 days of Ultrahuman Ring Air biometric data. HRV, sleep staging, recovery… Read…