April 19, 2024

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Humans have an elegant and intricate system of internal processes that help our bodies keep time, with exposure to sunlight, caffeine and meal timing all playing a role. But that doesn’t account for “precision waking.”

Sarah Mosquera/NPR


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Sarah Mosquera/NPR


Humans have an elegant and intricate system of internal processes that help our bodies keep time, with exposure to sunlight, caffeine and meal timing all playing a role. But that doesn’t account for “precision waking.”

Sarah Mosquera/NPR

Maybe this happens to you sometimes, too:

You go to bed with some morning obligation on your mind, maybe a flight to catch or an important meeting. The next morning, you wake up on your own and discover you’ve beat your alarm clock by just a minute or two.

What’s going on here? Is it pure luck? Or perhaps you possess some uncanny ability to wake up precisely on time without help?

It turns out many people have come to Dr. Robert Stickgold over the years wondering about this phenomenon.

“This is one of those questions in the study of sleep where everybody in the field seems to agree that’s what’s obviously true couldn’t be,” says Stickgold, who’s a cognitive neuroscientist at Harvard Medical School and Beth Israel Deaconess Medical Center.

Stickgold even remembers bringing it up to his mentor when he was just starting out in the field — only to be greeted with a dubious look and a far from satisfactory explanation. “I can assure you that all of us sleep researchers say ‘balderdash, that’s impossible,’ ” he says.

And yet Stickgold still believes there is something to it. “This kind of precision waking is reported by hundreds and thousands of people,'” he says, including himself. “I can wake up at 7:59 and turn off the alarm clock before my wife wakes up.” At least, sometimes.

Of course, it’s well known that humans have an elegant and intricate system of internal processes that help our bodies keep time. Somewhat shaped by our exposure to sunlight, caffeine, meals, exercise and other factors, these processes regulate our circadian rhythms throughout the roughly 24-hour cycle of day and night, and this affects when we go to bed and wake up.

If you are getting enough sleep and your lifestyle is aligned with your circadian rhythms, you should typically wake up around the same time every morning, adjusting for seasonal differences, says Philip Gehrman, a sleep scientist at the University of Pennsylvania.

But that still doesn’t adequately explain this phenomenon of waking up precisely a few minutes before your alarm, especially when it’s a time that deviates from your normal schedule.

“I hear this all the time,” he says. “I think it’s that anxiety about being late that’s contributing.”

Scientists get curious — with mixed results

Actually, some scientists have looked into this enigma over the years with, admittedly, mixed results.

For example, one tiny, 15-person study from 1979 found that, over the course of two nights, the subjects were able

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CNN
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As the United States rolled again the clocks just one hour this thirty day period to notice the finish of Daylight Saving Time, many people got a bit a lot more snooze than regular – but some not as substantially as other people.

Rising evidence demonstrates that lack of rest and slumber issues, such as obstructive rest apnea, keep on being much more widespread in Black, Asian, and Hispanic or Latino communities, and these inequities can have very long-term detrimental implications for bodily well being, even boosting the possibility of certain persistent diseases.

Meanwhile, Daylight Saving Time by itself – enacted in the US to reduce electricity use by extending daylight several hours – has prolonged been controversial in the United States.

The American Academy of Snooze Medication, the Rest Investigation Society and other professional medical teams have advocated for ending the observe, contacting for the adoption of a long term regular time that would not require shifting forward each and every spring and slipping back just about every autumn.

“Daylight saving time is associated with elevated threats of snooze decline, circadian misalignment, and adverse well being outcomes,” Dr. Beth Malow, professor of neurology and pediatrics and director of the Vanderbilt College Healthcare Center Sleep Division in Nashville, explained in a news launch this month. She authored a paper, printed in September in the journal Sleep, detailing the probable well being added benefits of adopting a long-lasting normal time.

In March, the US Senate unanimously handed the Sunshine Defense Act, which would make Daylight Saving Time long term across the place – that means there would be no reverting to “standard time” from early November through mid-March – but the laws would have to pass the Residence and receive President Joe Biden’s signature right before starting to be helpful in November 2023.

Now, some slumber researchers be concerned about the opportunity consequences that continuing to change typical time 2 times every yr might have on slumber wellbeing inequities.

“Poor sleep is involved with a host of bad overall health outcomes, including weight problems, hypertension, style 2 diabetes, cardiovascular sickness and selected cancers, like of the breast and colon. A lot of of these well being results are extra commonplace in the Black populace,” claimed Chandra Jackson, a researcher and epidemiologist with the National Institute of Environmental Wellness Sciences, who has been finding out racial and ethnic disparities in slumber.

“Experimental as nicely as observational studies have connected sleep to these health outcomes. Thus, rest could be an critical contributor,” she said. “Fortunately, slumber health and fitness is largely modifiable.”

As for the inequities viewed in slumber health and fitness, it’s not that White grownups really don’t also experience a lack of snooze and its health effects – but individuals of colour show up to disproportionately working experience them more, and which is thought to be mostly due to social devices in the United States.

Rest allows the physique to restore alone on a mobile

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