Discuss the impact of seeing the sunrise and sunset on your circadian rhythm

Impact of Sunrise and Sunset on Your Circadian Rhythm

Your circadian rhythm is a biological process that regulates the sleep-wake cycle and is inherently linked to the 24-hour light-dark cycle. This cycle hugely impacts your physical, mental, and behavioral states. One of the major influencers of this rhythm is the exposure to natural light, particularly sunrise and sunset.

Morning Light and Your Circadian Rhythm

Exposure to morning light sets a subtle signal to our body that it's time to wake up and start the day. This light exposure helps to reset our internal clock every day. The light, particularly the wavelength of blue light, affects the level of melatonin — the sleep hormone — and helps in increasing alertness and core body temperature.

Evening Light and Your Circadian Rhythm

As the evening comes and the light levels fade with the sunset, the pineal gland in the brain begins to produce melatonin. This hormone is necessary to prepare the body for sleep. Hence, exposure to the dwindling light of the sunset helps trigger the onset of the body's transition into the sleep phase.

The Disruption Caused by Artificial Light

Artificial lights, including screens of digital devices, have a strong potential to disrupt circadian rhythm. They frequently expose our eyes to light wavelengths similar to morning light, tricking our brain into thinking it's daytime, even during evening hours. Therefore, it is suggested to reduce exposure to artificial light close to bedtime.

Conclusion

Achieving synchronization with the natural cycle of sunlight and darkness is essential for maintaining an optimal circadian rhythm. The regular rise and fall of the sun can be a powerful external cue to regulate our biological sleep-wake cycle, boost mood, and overall well-being.