For the first time,a study has found that unborn babies inside mother’s womb yawn.
In the past,the science had noticed that unborn babies hiccup, swallow and stretch in the womb.
But now a study based on 4D scans of 15 healthy fetuses revealed that they yawn as well.
The study by Durham and Lancaster Universities,published in the journal PLOS One on November 21,according to Science daily,indicates that “yawning is a developmental process which could potentially give doctors another index of a fetus’ health.”
The study separates ‘yawning’ from non –yawn mouth opening.The reserchers findings were based on the duration of mouth opening.
“The researchers did this by using the 4D video footage to closely examine all events where a mouth stretch occurred in the fetus.Using their newly developed criteria, the research team found that over half of the mouth openings observed in the study were classed as yawns.”
Says the November 21 article in Science daily:The study was carried out on eight female and seven male fetuses from 24 to 36 weeks gestation. The researchers found that yawning declined from 28 weeks and that there was no significant difference between boys and girls in yawning frequency.”