WHOOP is unveiling a major research effort with the U.S. Army in Alaska to better understand how soldiers are adapting to the harsh winter conditions in the Arctic. This study examines how circadian alignment impacts physiological metrics, heart rate variability, and self-reported measures of resilience. WHOOP Director of Military Teams Robert Moeller sits down with WHOOP VP of Performance Kristen Holmes and Army Chief Warrant Officer Phil Ranck to discuss helping those who serve (2:59), measuring stress in soldiers (5:45), sleep deprivation (13:06), the goals of the study (17:24), HRV and sleep quality (18:38), understanding stress (19:39), extreme Alaskan conditions (21:47), darkness and the human body (23:28), optimizing for shift work (29:12), the design of the study (35:33), keeping soldiers safe (37:55), rest and preparedness (41:21), the core principle of HRV (49:13), and the purpose of this partnership (55:31).

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