Waking up suddenly in the middle of the night, especially around the same time such as 2:00 AM or 3:00 AM, can feel unsettling. The room is quiet, the world is still, and yet your body feels alert as if something has interrupted a deeper biological process.
For many people, this becomes a repeated pattern that leads to frustration, poor sleep quality, and daytime fatigue. While it may feel mysterious or even alarming, modern sleep science explains that these experiences are usually the result of a combination of normal sleep cycles, environmental factors, and internal physiological processes rather than a single hidden cause.
Human sleep is not a continuous state of unconsciousness. Instead, it is structured into repeating cycles that include light…
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