Part 2
Sleep environment also plays a role. A room that becomes too warm or too cold, light from passing vehicles, or even a partner’s movement can interrupt sleep. As the brain moves into lighter sleep phases near morning, it becomes more sensitive to these disruptions.
Some people link waking at 3 or 4 a.m. to spiritual or cultural beliefs, often calling it a “special hour” of awareness or transformation. While these interpretations can be meaningful on a personal level, medical science focuses more on physical and psychological causes rather than mystical ones.
Hormonal changes can also contribute, especially as people age. Shifts in melatonin production, menopause, thyroid imbalance, or irregular cortisol rhythms may affect sleep continuity. Certain medications, including those for blood pressure, depression, or asthma, are also known to interfere with nighttime rest.
