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The author is reliable, citing many sources and an expert on the topic, having a PhD in psychology. With 4 books written about peoples' behavior patterns, she might be good at setting the argument as neutral with hints of her opinion.

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"If we could just synchronize our sleep more closely with natural light patterns, it would become far easier to wake up."

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"Our brain-stem arousal systems (the parts of the brain responsible for basic physiological functioning) are activated almost instantly. But our cortical regions, especially the prefrontal cortex (the part of the brain

involved in decision-making and self-control), take longer to come on board."

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"Sleep researchers Charles Czeisler and Megan Jewett and heir colleagues at Harvard Medical School found that sleep inertia took anywhere from two to four hours to disappear."

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"When Wright asked a group of young adults to embark on a weeklong camping trip, he discovered a striking pattern: before the week was out, the negative sleep patterns that he’d previously observed disappeared."

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According to Roenneberg and Wittman, there is a relationship between severe social jetlag and increased usage of potentially harmful substances, like alcohol and caffeine, and drugs such as cigarettes. In addition, the increased risk of obesity raises drastically

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"The practice of going to sleep and waking up at 'unnatural' times, Roenneberg says, "could be the most prevalent high-risk behavior in out modern society."

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"In fact, according to Kenneth Wright, a neuroscientist and chronobiology expert, 'Cognition is best several hours prior to habitual sleep time, and worst near habitual wake time.'"

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chronic mismatch between biological and sleep time comes at a high cost.

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"Social jetlag" is decided by the difference between your natural waking time and your actual waking time, and can deeply affect your health and productivity.

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"In those early waking minutes, our memory, reaction time, ability to perform basic mathematical tasks, and alertness all suffer. Even simple tasks, like finding and turning on the light switch, became far more complicated."

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Sleep inertia affected cognitive function and overall health.

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effects of sleep inertia and social jetlag are reversible

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Evidence 3:chronic mismatch between biological and social sleep time comes at a high cost: alcohol, cigarettes, and caffeine use increases—and each hour of social jetlag correlates with a roughly thirty-three per cent greater chance of obesity.