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Blue light emitted from screens disrupts sleep patterns from "summary" of Why We Sleep by Matthew Walker

The intrusion of screens into the bedroom is not only an invasion of our physical sanctum, but also an assault on our biological sanctuary. Most electronic devices emit a type of blue light that is particularly effective at inhibiting the release of melatonin, the hormone that signals to the body and brain that it is time for sleep. As a result, exposure to this artificial light in the evening can disrupt the natural progression of our circadian rhythm, delaying the onset of sleep and reducing its overall quality. The consequences of this disruption extend beyond a mere inconvenience. Studies have shown that individuals who engage with screens before bedtime not only take longer to fall asleep, but also experience less restorative deep sleep and more frequent awakenings throughout the night. This impaired sleep quality can have far-reaching effects on both physical and mental health, contributing to a host of issues such as impaired cognitive function, mood disturbances, and compromis...
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    Why We Sleep

    Matthew Walker

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