Dr Amir Khan, a prominent NHS GP, has discussed a common phenomenon where many people find themselves waking up during the early hours of the morning, particularly between 2am and 4am. He shared insights through a video, emphasizing that this experience is normal and has biological underpinnings. One primary reason for this wakefulness is linked to cortisol, which is known as the body's main stress hormone, helping to regulate sleep and wake cycles.

In his explanation, Dr Khan noted that the brain starts to activate in preparation for the day ahead around this time, influenced by the surge in cortisol levels. This hormone plays a crucial role in controlling mood and motivation, which can affect sleep patterns. Furthermore, Dr Khan elaborated that the psychological state of individuals can also be a contributing factor; stress or anxiety can significantly impact a person's ability to stay asleep throughout the night.

The insights provided by Dr Khan are valuable for those who struggle with sleep disturbances, offering a comforting perspective that waking up at these hours can result from understandable biological processes as well as emotional states. Understanding these triggers may help individuals to better cope with their nighttime awakenings, and potentially mitigate any associated stress or concern about their sleep quality.