You're listening to Brains on, where we're serious about being curious.

Brains on is supported on part by a grant from the National Science Foundation.

You hear that?

Glocks!

They are everywhere and I don't just mean when you walk into a clock shop.

Even without alarms or watches our bodies run on clocks.

Down to the cellular level, we have tens of thousands of clocks in us.

Together they make up our sarcasm rhythm.

It's how our bodies no one to wake up in the morning.

When to eat?

When to think about big problems?

And when to go to sleep at night?

Our clocks are resinked each day by the rise of the sun.

Let and dark play a key factor by peeling ourselves what to do.

Today's episode of Brains on is all about circadian rhythm.

And those clocks that tell us what to do.

You're listening to Brains on from American Public Media.

We take questions big and small from kids all over the world and track down the answers.

Along the way we try to have a little fun too.

Oh hey Anika, I guess I should give a proper introduction.

I am your host Molly Bloom and joining me today from Stockholm Sweden is 11-year-old Anika Rader.

Hi Anika!

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