søvnvåknesyklus

Søvnvåknesyklus refers to the natural, recurring pattern of sleep and wakefulness that humans and many other animals experience over a 24-hour period. This cycle is primarily regulated by the body's internal biological clock, known as the circadian rhythm. The circadian rhythm is influenced by external cues, most notably light and darkness, which signal to the brain when it is time to be awake and when it is time to sleep.

During the wakeful phase, the body is generally more active, with higher alertness and cognitive function. As darkness falls, the body begins to produce melatonin, a hormone that promotes sleepiness. This leads to the transition into the sleep phase, which is characterized by reduced physical and mental activity and is crucial for bodily restoration, memory consolidation, and overall health.

Disruptions to the søvnvåknesyklus can occur due to various factors, including shift work, jet lag, irregular sleep schedules, and certain medical conditions. Persistent disruption can lead to sleep disorders, fatigue, and a range of negative health consequences, affecting mood, concentration, and physical well-being. Maintaining a consistent sleep-wake schedule, even on weekends, is generally recommended to support a healthy søvnvåknesyklus. Exposure to natural light during the day and avoiding bright lights, especially screens, before bedtime can also help regulate this fundamental biological process.