Getting out of bed suddenly in the middle of the night, specifically around 3 am, accompanied by tachycardia, restlessness or problems falling asleep, goes beyond a mere coincidence. Experts indicate that this type of interruption may be linked to cortisol, a vital hormone that manages energy, metabolism and the way the body reacts to stressful situations. Its irregular levels can activate a state of premature alertness.
Generally, cortisol levels remain low throughout the night, beginning to rise gradually as the usual waking moment approaches. However, imbalances in the circadian rhythm can accelerate this increase, resulting in nighttime awakenings. Factors such as chronic stress, sleep deprivation and changes in daily routine contribute to this dysregulation, establishing a vicious cycle where stress negatively impacts sleep, and poor quality of rest further intensifies the effects of stress. This hormonal imbalance not only affects sleep, but can also have implications for long-term cardiovascular and immune health, being a sign that the body is under excessive pressure.
Research published in the scientific publication Psychoneuroendocrinology investigated 61 healthy women for a week, with the aim of observing the cortisol response after waking up. Scientists have found that variations in the release patterns of this hormone can be an indication of the body’s ability to deal with everyday challenges, and are also linked to important markers of well-being.
In order to maintain hormonal harmony and improve the quality of rest, health professionals advise following a consistent sleep routine, avoiding screens and stimulating substances before going to bed. It is also recommended to engage in relaxing practices at night and ensure exposure to sunlight during the day. If the awakenings become constant and come along with feelings of anxiety, seeking medical help is essential.
