08/10/2025
Sunrise and sunset play a crucial role in regulating your circadian rhythm โ your bodyโs internal 24-hour clock that influences sleep, alertness, hormones, digestion, and many other biological functions.
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Sunrise (Morning Light Exposure)
1. Resets your internal clock:
When your eyes detect natural light in the morning, especially blue-enriched light from the sun, it signals your brainโs suprachiasmatic nucleus (SCN) (the โmaster clockโ) to reset for the day.
2. Suppresses melatonin:
Morning light stops melatonin production (the hormone that makes you sleepy) and helps you feel awake and alert.
3. Boosts cortisol naturally:
Cortisol rises in the morning as part of your bodyโs normal rhythm, helping you feel energized and focused.
4. Synchronizes your rhythms:
Consistent morning light exposure helps align your sleep-wake cycle, making it easier to fall asleep at night and wake up at the same time every day.
๐ Sunset (Evening Light Exposure)
1. Signals your body to wind down:
As natural light fades and red/orange wavelengths dominate, your body recognizes that itโs time to prepare for rest.
2. Triggers melatonin release:
The decrease in light intensity (especially blue light) tells the brain to start producing melatonin, promoting drowsiness.
3. Stabilizes sleep timing:
Experiencing natural dusk light helps your circadian rhythm anticipate sleep onset, making your bedtime feel more โnatural.โ
I love a good sunrise sea swimโฆ Hythe this morning ๐