Getting a full night of uninterrupted sleep is surprisingly uncommon, yet it’s essential for being fully productive and alert the following day.
Many individuals assume that simply going to bed at the right hour will ensure a restful night, only to find themselves waking up frequently between 3:00am and 5:00am. This can lead to challenges, especially for those who struggle to fall back asleep.
However, the fact that so many people wake during this time is not just a matter of chance or bad luck. There’s a deeper significance to this phenomenon.
The period from 3:00am to 5:00am is often called the “hour of the wolf,” a term popularized by Swedish filmmaker Ingmar Bergman in his psychological horror film of the same name.
Bergman described it as “the hour between night and dawn … when most people die, sleep is deepest, nightmares are most vivid. It is the time when the sleepless are tormented by their greatest fears, and when ghosts and demons are at their strongest. Interestingly, it is also when many babies are born.”

Professor Birgitta Steene notes that this term comes from Swedish folklore, where the “hour of the wolf” refers specifically to the time between 3:00am and 5:00am.
This timeframe is thought to be linked to a higher incidence of both deaths and births. It’s also when the body typically enters its deepest state of rest, which can significantly impact bodily functions.
In various folk traditions, the witching hour, or devil’s hour, is a nighttime period associated with supernatural events. During this time, it is believed that witches, demons, and spirits are most likely to appear and exert their influence.
The hour of the wolf.
For those who can sleep soundly, the hour of the wolf signifies the time when sleep is at its deepest. Conversely, for those who find themselves awake, it is believed to be a moment when anxiety peaks.
The body’s circadian rhythm, which is the 24-hour cycle of various physiological functions, typically aligns with the sun’s cycle, causing body temperature, blood pressure, and metabolism to decrease at night.
Around 4:00 AM, these functions reach their lowest point, as the body enters its natural resting phase. However, if you experience anxiety, this is often when those feelings can intensify, which may explain why you wake up during this time.

