Waking up at 3 or 4 in the morning: here’s what it means

Stress, anxiety: the real disruptors of the early morning
Stress is one of the most common causes of nighttime awakenings. When the environment becomes completely silent and no stimulation holds our attention, everyday thoughts – worries, accumulated tension, mental burden – resurface.

The brain, partially awakened, then restarts cognitive activity, sometimes abruptly.

This phenomenon is even more pronounced in people suffering from:

anxiety,
mental overload
of emotional exhaustion,
or chronic stress.
Thus, many people find that they always wake up at the same time, as if their brain has memorized this pattern. And in a way… that’s what happens.

When blood sugar affects your waking
A lesser-known but equally important factor concerns glucose regulation. Even at night, the body must maintain a stable blood sugar level.