Science Explains Why You Are Not a “Morning Person”

(Image redit: The early bird and the night owl from the NeatoShop)

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.


The above article by Nathan Reese is reprinted with permission from the June 2015 issue of mental_floss magazine.

Don't forget to feed your brain by subscribing to the magazine and visiting mental_floss' extremely entertaining website and blog today for more!

Mid-afternoon Narwhal available at The NeatoShop.

Newest 2
Newest 2 Comments

Another factor - Sleep apnea. I was ok in the mornings, the crashed about noon and was dopey all afternoon. I mentioned to my doctor that I'd had a close call driving my car, and he sent me to the sleep test. Now I use a CPAP machine to help me breathe while I sleep, and it's made all the difference. I'm pretty sure the apnea cost me a job, though.
Abusive comment hidden. (Show it anyway.)
Login to comment.

Email This Post to a Friend
"Science Explains Why You Are Not a “Morning Person”"

Separate multiple emails with a comma. Limit 5.


Success! Your email has been sent!

close window

This website uses cookies.

This website uses cookies to improve user experience. By using this website you consent to all cookies in accordance with our Privacy Policy.

I agree
Learn More