Researchers at Aarhus University in Denmark collected data, such as socio economic status and support for economic redistribution, and compared them with the biceps size of hundreds of participants from the US, Argentina and Denmark.
They found that people who have strong upper body strength support conservative views while those who are weaker were more liberal and supported socialist views on matters such as redistribution of wealth. The researchers added that while it is generally assumed that politics is a modern phenomenon, political views have been shaped by evolution over the centuries. The study has been published in the journal Psychological Science.
"In all three countries, physically strong males consistently pursued the self-interested position on redistribution. However physically weak males were more reluctant to assert their self-interest - just as if disputes over national policies were a matter of direct physical confrontation between individuals", lead researcher Professor Michael Petersen said.