EMBRACING THE RHYTHM OF THE DAY : UNDERSTANDING CIRCADIAN VARIATIONS IN LIGHT FOR BETTER HEALTH
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EMBRACING THE RHYTHM OF THE DAY : UNDERSTANDING CIRCADIAN VARIATIONS IN LIGHT FOR BETTER HEALTH
BY RICHARD GIBSON , AIM HEALTH
We ' ve witnessed significant advancements in technology and lifestyle changes over the years . Yet , amidst the hustle and bustle of modern life , one fundamental aspect often overlooked is our connection to natural light and its impact on our health and well-being . Today , let ' s delve into the normal variations in light during a typical circadian day and explore the advantages of aligning with this natural rhythm for optimal health .
Our bodies have an intricate internal clock known as the circadian rhythm , which regulates various physiological processes over a roughly 24-hour cycle . Central to this rhythm is our exposure to light , which serves as the primary cue to synchronize our internal clock with the external environment . Throughout the day , the intensity and spectrum of natural light change , influencing our energy levels , mood , and overall health .
In the morning , natural light gradually increases , signalling our bodies to wake up and kick-starting essential processes like hormone production and metabolism . The light at this time of day is predominantly red and blue containing no ultraviolet light . This early exposure to sunlight helps suppress the sleep hormone melatonin , allowing us to feel alert and focused . Incorporating a morning routine that includes exposure to natural light can enhance cognitive function and mood , setting a positive tone for the day ahead .
As the day progresses , the intensity of light peaks around midday – with introduction of the ultra-violet frequencies , providing a natural boost of energy and vitality . This period of bright light exposure is ideal for engaging in outdoor activities , such as walking or gardening , which not only promotes physical health but also helps regulate our internal clock . Taking advantage of this midday light can improve productivity and mental clarity - common challenges faced by many .
As the afternoon unfolds we lose the ultra-violet , the intensity of natural light gradually diminishes – as red again predominates at sunset , signalling the onset of evening and the preparation for rest . In the absence of light , our bodies begin to produce melatonin in preparation for sleep . However , the prevalence of artificial light from screens and indoor lighting can disrupt this natural process , leading to sleep disturbances and decreased sleep quality . Limiting screen time in the evening and opting for softer , dimmer lighting can promote better sleep hygiene and overall well-being .
Embracing the normal variation in light throughout the circadian day offers numerous advantages for health and vitality . By aligning with the natural rhythm of daylight , we can improve our sleep quality , boost energy levels , and enhance overall mood and cognitive function . Incorporating simple habits like spending time outdoors in the morning , maximizing exposure to midday light , and minimizing artificial light exposure in the evening can have profound effects on our well-being .
As we navigate the complexities of modern life , let ' s not forget the importance of reconnecting with nature ' s rhythms . By embracing the ebb and flow of light throughout the day , we can unlock the key to better health and vitality , allowing us to thrive in every aspect of our lives .
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