How to pronounce “circa” in English

Your circadian rhythm is ready to sleep, but your drive is down, because you got rid of some of that adenosine during your nap.

That circadian rhythm was just off.

This is a gym circa 1921.

Today it's circa $500.

Here is Tom Kurtz circa 1958.

people had circa 2004-5-6.

There was a great circa 1950 science fiction movie called "Destination Moon," which Robert Heinlein was the advisor for.

Like AOL circa '96.

There's also a circadian rhythm.

So the circadian rhythm is a lot-- it's really your biological clock.

So what is circadian?

We have these circadian clocks throughout our bodies, and they quite firmly run our physiology over a pretty strict 24-hour cycle.

is called the Circadian cycle is interfered with which is why

And then circadian rhythms.

So based on Circadian rhythms during the day serotonin makes you feel alert, awake, you're calm but sort of alive and ready to go and keeps your mood elevated.

We’re talking Walmart Black Friday circa 2005.

This is my family growing up circa 1992 in the blistering cold winter of Des Moines, Iowa.

And this is the connected taxicab circa 2005.

You're flipping through this magazine circa 1961, and you come across this big, empty white page with a little teeny car.

you're in Bogota Colombia circa nineteen ninety-three Bogota was still recovering

Russell Foster is a professor of circadian neuroscience.

His research dives into how circadian rhythms and sleep are generated and regulated and how modern life is

And then think about how Sleep and Circadian Rhythm Disruption, or SCRD, can impact upon our health and well-being,

between mental illness and sleep and circadian rhythm disruption.

Another really important area is Sleep and Circadian Rhythm Disruption on emotional processing.

I did my PhD in sleep and circadian genetics at Northwestern, and Meir literally wrote the book that anyone would start out with.

This is a function of your circadian clock.

that function it controls the Circadian rhythm you see circadian rhythm is the

This is what it looks like for Kemeny and Kurtz circa 1963.

It was very much like this connected taxi cab circa 2005.

If you type driver's license into Honolulu.gov circa 2012, you would get a page that looks like this.

This is the Google Maps image of the Dalles circa 2010.

So here it is, circa 2010.

fringe cases is when we actually legitimately need to reset circadian rhythm, travel, jet lag,

And he's the founder and director of the Sleep and Circadian Research Institute.

But that definitely sprung from being more in tune with the circadian rhythm, and looking at light and dark.

And he was able to show that his circadian rhythm persisted even in the absence of light.

Now, the fact is circadian rhythm ended up being about 24 and 1/2 hours.

This is a rodent that has a mutant circadian clock.

I'm going to talk to you about something called circadian rhythms, and what do they mean-- Joe's favorite word, circadian-- and what can we learn from them

So the same holds true with sleep is you have this circadian system, and this actually makes you want to get sleepier

So it turns out that all of our hormones lead a circadian life.

It turns out microbes actually have a big influence on circadian rhythm, which is what jet lag is. And they're actually

I was interested to hear you talking about the circadian rhythm stuff on the submarines, especially because since I read--

temperature changes, circadian rhythms, sleep patterns, all of this.

And they'll say I'm interested in looking at how the site was abandoned circa 4,000 years ago.

This is the view of the YouTube platform from a gamer's perspective circa 2009.

So he was one of the first live-streamers on Justin.tv circa 2009.

This is how I see my father, circa 1990.