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Have you ever wondered why you would rather choose to sleep late, but then have difficulty waking up on time?

Throughout history, the solar day controlled the light-dark cycles. These days, however, human beings have the freedom to prolong light exposure by turning on artificial lights. The research published by Anne C. Skeldon, Derk-Jan Dijk and Andrew J.K. Philips on Scientific Reports used a mathematical model to understand the changes.

The Method Used

The researchers incorporated the various impacts of light, sleep homeostasis and circadian rhythmicity to offer a quantitative theoretical framework to comprehend impacts of modern forms of light utilization on the human circadian system.

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Their model demonstrates that without the existence of artificial light, people would automatically rise at dawn. They were able to prove that artificial light interrupts favored sleep timing and circadian rhythmicity, and jeopardizes adjustment to the solar day when the wake up time isn’t imposed.

The Significant Findings

When social constraints implement the wake up time, like school or work, artificial light produces a disparity between circadian rhythmicity or social jet lag and sleep timing. The model infers that development fluctuations in circadian amplitude and sleep homeostasis make adolescents principally sensitive to the impact of light usage.

It foretells that mitigating social jet lag can easily be accomplished by reducing light usage instead of postponing social constraints, especially in people who have slow body clocks or when the required wake up times happen after sunrise. These theory-informed forecasts may help in developing interventions to treat and prevent social jet lag and circadian rhythm sleep disorders.

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