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Babies spotted yawning inside the womb

Thursday 22 Nov 2012 5:55 p.m.

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A British medical team has revealed the first recording of babies yawning in the womb.

But it's not a sign they're bored or sleepy, it's a sign the foetus' nervous system is developing.

The yawning decreases as the foetus grows, and should stop altogether by about 36 weeks.

And yes, it's a yawn – because only in yawns does a mouth open slower than it closes.

Watch the video.

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