Exposure to natural darkness has historically shaped humans' connection to the universe, but modern lighting, particularly in urban settings, disrupts this relationship. Excessive artificial light, prevalent in cities like Los Angeles, reduces visibility of stars and impacts our sleep quality. Studies show that both street lighting and home technology, such as screens, hinder melatonin production, the hormone that regulates sleep cycles. Engaging with screens before bedtime significantly delays melatonin release and reduces the quality of REM sleep, resulting in diminished restfulness and restored energy in the morning.
Matthew Walker is Professor of Neuroscience and Psychology at the University of California, Berkeley, and Founder and Director of the Center for Human Sleep Science. Check out his book "Why We Sleep: Unlocking the Power of Sleep and Dreams" on Amazon. https://www.amazon.com/dp/1501144316
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