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Science Explains Why You're Not a Morning Person

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Can't get out of bed in the morning? Allow science to tell you why—and whether or not you can change that.

I’m awful in the mornings. Can science fix me?

Maybe not, but it can explain why you’re such a sleepyhead (which may or may not be of interest to your boss). “There are morning people and evening people,” says Sonia Ancoli-Israel, director of education at UC-San Diego’s Sleep Medicine Center. “We call them larks and owls.” Which one you are has to do with your circadian system.

How does my circadian system work?

A region of 20,000 nerve cells in your brain called the suprachiasmatic nucleus keeps your body on schedule throughout the day, regulating everything from hormone levels to when you digest food. And, of course, when you feel sleepy.

How does that explain me?

Larks are “phase advanced,” meaning they feel tired early in the evening. Owls are “phase delayed”—a pattern most common in teens and young adults—and don’t feel tired until late at night.

Should I be concerned?

Larks do have a mental edge. In 2013, a study found that early and late risers have structurally different brains. Larks have more quality white matter, which helps nerve cells communicate.

Can I change that?

A little bit. Your circadian rhythm changes over your lifetime. Babies wake at dawn, while teenagers can’t get out of bed before noon. As adults age, mornings typically get easier. You can also hack your clock by sticking to a regimented sleep schedule and avoiding light before bed. Light receptors in the eye tell your brain when to call it a night.

Can I blame this on genetics?

You bet! In 2012, scientists discovered a single nucleotide near a gene called “Period 1” that determines whether you’re an owl, a lark, or in between.

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What Pop Culture Gets Wrong About Dissociative Identity Disorder
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From the characters in Fight Club to Dr. Jekyll and Mr. Hyde, popular culture is filled with "split" personalities. These dramatic figures might be entertaining, but they're rarely (if ever) scientifically accurate, SciShow Psych's Hank Green explains in the channel's latest video. Most representations contribute to a collective misunderstanding of dissociative identity disorder, or DID, which was once known as multiple personality disorder.

Experts often disagree about DID's diagnostic criteria, what causes it, and in some cases, whether it exists at all. Many, however, agree that people with DID don't have multiple figures living inside their heads, all clamoring to take over their body at a moment's notice. Those with DID do have fragmented personalities, which can cause lapses of memory, psychological distress, and impaired daily function, among other side effects.

Learn more about DID (and what the media gets wrong about mental illness) by watching the video below.

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History
Scientists Reveal Long-Hidden Text in Alexander Hamilton Letter
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Age, deterioration, and water damage are just a few of the reasons historians can be short on information that was once readily available on paper. Sometimes, it’s simply a case of missing pages. Other times, researchers can see “lost” text right under their noses.

One example: a letter written by Alexander Hamilton to his future wife, Elizabeth Schuyler, on September 6, 1780. On the surface, it looked very much like a rant about a Revolutionary War skirmish in Camden, South Carolina. But Hamilton scholars were excited by the 14 lines of writing in the first paragraph that had been crossed out. If they could be read, they might reveal some new dimension to one of the better-known Founding Fathers.

Using the practice of multispectral imaging—sometimes called hyperspectral imaging—conservationists at the Library of Congress were recently able to shine a new light on what someone had attempted to scrub out. In multispectral imaging, different wavelengths of light are “bounced” off the paper to reveal (or hide) different ink pigments. By examining a document through these different wavelengths, investigators can tune in to faded or obscured handwriting and make it visible to the naked eye.

A hyperspectral image of Alexander Hamilton's handwriting
Hyperspectral imaging of Hamilton's handwriting, from being obscured (top) to isolated and revealed (bottom).
Library of Congress

The text revealed a more emotional and romantic side to Hamilton, who had used the lines to woo Elizabeth. Technicians uncovered most of what he had written, with words in brackets still obscured and inferred:

Do you know my sensations when I see the
sweet characters from your hand? Yes you do,
by comparing [them] with your [own]
for my Betsey [loves] me and is [acquainted]
with all the joys of fondness. [Would] you
[exchange] them my dear for any other worthy
blessings? Is there any thing you would put
in competition[,] with one glowing [kiss] of
[unreadable], anticipate the delights we [unreadable]
in the unrestrained intercourses of wedded love,
and bet your heart joins mine in [fervent]
[wishes] to heaven that [all obstacles] and [interruptions]
May [be] speedily [removed].

Hamilton and Elizabeth Schuyler married on December 14, 1780. So why did Hamilton try and hide such romantic words during or after their courtship? He probably didn’t. Historians believe that his son, John Church Hamilton, crossed them out before publishing the letter as a part of a book of his father’s correspondence. He may have considered the passage a little too sexy for mass consumption.

[h/t Library of Congress]

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