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There’s a wealth of data demonstrating that a lack of exposure to light leads to sleep and metabolic disorders, depression and cardiovascular disease, among other ailments… Permanent Standard Time is the only fair and viable option. Humans require adequate morning light so that our internal biological rhythms synchronize properly to the local time. Why Are Sunrises So Important? ack of morning light can have serious impact on our biological clocks, which control the body’s many daily rhythms, including our sleep and wakefulness cycle.
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