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Unborn Babies 'Yawn Repeatedly Inside Womb'
Scientists say they have conclusive proof that unborn babies yawn repeatedly in the womb.
While it is well known that foetuses open and close their mouths, experts have disagreed over whether or not they are actually yawning.
A new study using high resolution ultrasound footage appears to confirm that they do yawn, and the most likely explanation is that it is linked to brain development.