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AMAZING VIDEO: Scan shows baby yawning in mother’s womb

Posted at 9:24 AM, Nov 23, 2012
and last updated 2012-11-23 09:24:48-05

(CBS News) – British researchers have discovered a new mystery about the developing fetus.

By using four D scans, they’ve determined that unborn babies actually yawn during the last few months before birth.

Watch the video clip above for more from CBS News’ Jeff Glor.