You're listening to Shortwave from NPR.

So much of life is about trade-offs.

You give a little, you get a little.

And we've got a trade-off today that I sure have thoughts on.

Maybe you do too.

What about you, Allison Aubrey?

Yes, I've got some thoughts.

We're talking dear listeners about the twice yearly changing of the clocks.

Spring forward when daylight saving time begins and fall backward when it ends.

It may not sound like a big deal, but it turns out our bodies are a lot more sensitive

to time than most of us have ever realized.

And back in 2015, I spoke to this circadian scientist named Fred Turck at Northwestern

University about it.

Yeah, let's listen to some of that.

We've known for a long time about the master clock in our brains that synchronizes our

body to the 24 hour light dark cycle, but in recent years, scientists have made a pretty

cool discovery.

It turns out that we have different clocks in every organ.

Yes, there are clocks in all the cells of your body.

Wow, it's kind of stunning.

Yes, that is a discovery that's literally surprised, as I must say.

Turck says, think of all these clocks in our bodies as instruments or players in an orchestra.

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