Sleeping through the night without interruptions is crucial for feeling refreshed and productive, yet many people often wake up between 3:00 AM and 5:00 AM and struggle to fall back asleep. This pattern is not random and holds both historical and physiological significance. The period is sometimes called the “hour of the wolf,” a term coined by Swedish filmmaker Ingmar Bergman, representing the time when sleep is deepest, nightmares feel most real, and people are more likely to pass away. Swedish folklore also associates this time with an increased likelihood of births and deaths.
During these early morning hours, the body reaches its lowest physiological state, with core temperature, blood pressure, and metabolism slowing down as part of the circadian rhythm. This phase can be particularly challenging for those prone to anxiety, as negative emotions can intensify, making it harder to stay asleep. Many cultures also associate this timeframe with supernatural activity, referring to it as the “witching hour.” Whether influenced by folklore or biological processes, waking up at this time can feel unsettling, especially for those experiencing anxiety.