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This is Scientific Americans.

Science quickly. I'm Karen Hawkins.

If you're a new parent, or have ever had any exposure to a baby,

you're no doubt familiar with this sound.

Now, the emotions you might experience when treated to this exhibition

of infant lung capacity may vary depending on the time of day,

how much sleep you've had, if any, and how long the show has been going on.

But one thing's for sure.

Anyone who has ever heard a baby crying is wondered,

how do I make it stop?

Well, a new study shows that five minutes of motion is all it takes to get a crying baby to finally conke out.

The work appears in the journal, Current Biology.

Infant crying is a baby's shoe for parents, but what parents can do is limited.

Kumi Kuroda is a lab head at the Reichen Center for Brain Science in Japan,

...