Sleeping through the night is crucial for feeling refreshed, yet many wake up between 3:00 AM and 5:00 AM and struggle to fall back asleep. This pattern has historical and physiological roots.

This period is often called the “hour of the wolf,” a term made famous by filmmaker Ingmar Bergman. He described it as the time “when sleep is deepest, nightmares feel most real, and many people pass away.” Swedish folklore also ties this hour to increased births and deaths.

Physiologically, the body reaches its lowest state—core temperature, blood pressure, and metabolism drop due to the circadian rhythm. Anxiety can worsen during this time, making it harder to return to sleep.

Many cultures associate this timeframe with supernatural activity, often calling it the “witching hour.” Folklore and fear can amplify feelings of unease.

Whether due to biological changes or deep-rooted beliefs, waking up during these hours can be unsettling, especially for those prone to anxiety.