Waking up between 3:00am and 5:00am is more common than many people realize. This period, often called “the hour of the wolf,” is linked in folklore and psychology to deep sleep, vivid dreams, anxiety, and emotional stress. The term was popularized by filmmaker Ingmar Bergman, who described it as the darkest part of the night when fears feel strongest.
During these early morning hours, the body reaches its lowest point in temperature, blood pressure, and metabolism as part of its natural circadian rhythm. For people dealing with stress or anxiety, this can make emotions feel more intense and may cause sudden waking or difficulty falling back asleep.