" Prolonged sitting has been linked to an increased risk of cardiovascular disease and death, but according to the researchers, this contradicts the evolutionary aspect which favours strategies that conserve energy.
And there may be an evolutionary reason for why our brains would do this.
Dr Anna Machin, an Evolutionary Anthropologist at the University of Oxford says men look for signs of fertility and good health in a partner "and the major indicator of that in women is the waist-hip ratio… the absolute ideal.
"A robust jealousy mechanism is activated in men and women by different types of cues -- those that threaten paternity in men and those that threaten abandonment in women," said Jaime Confer, the study's lead author and a PhD candidate in evolutionary psychology.
She said she believed that the response had an evolutionary basis, as we subconsciously assume those who look like us must be relatives.
Evolutionary psychologists, who say different parts of the brain can harbor conflicting beliefs at the same time, say self-deception is a way of fooling others to our own advantage.
Like the new Snow Leopard operating system released in August by Microsoft's archrival, Apple, Windows 7 is much more of an evolutionary than a revolutionary product.
Evolutionary biologists say that it's better to be average looking, as average features advertise better reproductive health and more diverse set of genes.
Stavropoulos argues that our "cute aggression," the feeling that something is so adorable you can't take it, serves as an evolutionary function.
So before children have learnt to communicate their needs through language, it now appears they rely on our evolutionary past to get their feelings across.
This may be a subconscious evolutionary choice like that observed in animals to keep the family lineage strong and healthy.
What appears as emotional impulses may well be a deep-rooted personality trait that was the result of our evolutionary history, trying to tell us something.
"Not only have you been lucky enough to be attached since time immemorial to a favored evolutionary line, ,, but you have also been extremely, make that miraculously fortunate in your personal ancestry.
The tiniest deviation from any of these evolutionary shifts, , and you might now be licking algae from cave walls or lolling walrus-like on some stony shore ,,, or disgorging air through a blowhole in the top of your head before diving 60 feet for a mouthful of delicious sandworms.
The Karolinska Institute researchers says this makes sense in evolutionary terms.
Poop-eating is probably a normal, evolutionary dog trait.
That's according to a study in the journal Evolutionary Psychology.
Where single women are rare, women marry earlier, researchers reported August 4 in the journal Evolutionary Psychology.
As evolutionary biologist John McDonald told PBS, he's received emails from children concerned that they aren't related to their parents because they don't share the ability.
"In effect what we were doing was sort of genomic archaeology, in looking at the genomes, and comparing the variation and using that information to effectively reconstruct the evolutionary histories," he said.