The human body is a complex machine that is controlled by various internal and external factors. One of the most significant factors is the body's natural rhythm, a natural process that regulates our physical, mental, and behavioral changes over a cyclic period. The term 'circadian' comes from the Latin words 'circa,' meaning 'around,' and 'diem,' meaning 'day,' so it literally translates to 'around a day.'

The circadian rhythm is controlled by an internal biological timer that is located in the brain, specifically in the sensitive spot (SCN). This tiny group of cells responds to light and dark signals from the environment to synchronize our bodily functions with the day-night pattern. When light enters our eyes, it sends a signal to the SCN, which then releases regulatory agents and other substances to regulate various bodily processes.

One of the most significant aspects of the circadian pattern is its influence on our rest-activity cycle. The release of melatonin, a hormone produced by the brain center, is a key factor in regulating our day-night cycle. Serotonin is released in response to darkness and promotes sleepiness, while the release of adrenaline promotes vigilance in response to light. When we are exposed to natural light during the day, the SCN regulates the release of adrenaline, allowing us to feel alert. Conversely, when it gets dark at night, the SCN promotes the release of melatonin, helping us to fall sleep.

The circadian rhythm also affects our physical fitness in various ways. Research has shown that our bodily functions, such as body temperature, follow a natural circadian cycle. For example, our body energy typically peaks in the late afternoon and drops at night, which is one of the reasons why we feel more vigilant in the noon and more relaxed at night.

In addition to influencing our sleep-wake cycle and physical wellbeing, the circadian cycle also affects our mental wellbeing and cognitive performance. Studies have shown that irregular sleep schedules and disruptions to the circadian rhythm can lead to depression. Moreover, the circadian rhythm plays a significant influence in regulating our emotion, with our brain releasing substances such as serotonin in response to the natural day-night cycle.

Given the significance of the circadian pattern, it's vital to maintain a regular wake up time and exposure to natural daylight to promote a healthy internal timer. This can be achieved by going to bed and waking up at the same hour every month, and by spending some minutes outdoors during the afternoon. In addition, maintaining a consistent schedule and minimizing exposure to electronics before bedtime can also help to regulate our circadian rhythm.

In conclusion, the circadian pattern is a fundamental element of our bodily functions, influencing our rest-activity cycle, physical wellbeing, mental wellbeing, pineal guardian reviews and cognitive ability. By understanding its importance and taking steps to maintain a healthy internal clock, we can improve our overall wellbeing and promote a healthier habits.