Tag: Sleep cycles

Waking up at 3 am is a remarkably common phenomenon, with many people experiencing this frustrating nocturnal alarm. While the hour can feel eerie and mysterious, there's a clear biological basis for what actually happens at 3 am, involving a shift in hormones, body temperature, and sleep cycles.

The human body is governed by intricate biological clocks, and a disruption in these cycles can signal underlying health issues. Understanding what is the indication of rhythm is key to recognizing these vital clues, from the regular beating of your heart to your 24-hour sleep-wake cycle.