Longer you yawn, bigger your brain: Study
Your yawn can indicate how big your brain is
People usually tend to yawn when they are tired and bored, but now according to a new study the length of a yawn can further indicate how big your brain is.
Researchers from the State University of New York in the US have found evidence that the animals with bigger brains are more variable in the length of their yawns.
Moreover, the researchers have scanned YouTube in order to find a bunch of different animals yawning. They have looked at the videos of 29 mammals yawning in order to calculate the average length of their yawns. The animals had their brain weight already documented in an earlier research.
When the researchers have crunched the numbers, they have realized that the brain weight and the number of neurons in the outer layer of the brain called cortex can reliably further predict yawn length.
Your yawn size does not depend on your size
For instance, gorillas, walruses, horses and African elephants may also have huge sizes but they have shorter yawns than the humans because the size of their brains are smaller compared with ours.
The findings have further suggested that the length of yawn does not further correlate to the size of the body but to the size of the brain, as per the reports.
According to Liz Cirulli Rogers, from the Duke University School of Medicine, it is further possible that more intelligent animals have various different types of yawn in the response to different stimuli while the less-intelligent ones only have one type of yawn.
“We show that both the mean and variance in yawn duration are robust predictors of mammalian brain weight and cortical neuron number,” Gallup added.
So, from now on notice your yawn, because that would definitely define your brain size. Keep up with that laziness, and keep on yawning.