Manual transmissions have been linked to psychosexual arousal and attraction, according to a new study. Researchers found that women who drove cars equipped with manual transmissions were more likely to find men attractive than those who didn't drive them. The study, published in the journal Human Reproduction, involved female participants aged 18 to 25 years old. Participants were asked to rate the attractiveness of male faces while they were driving a car with either an automatic or a manual transmission. Women who drove the stick shift rated the men's faces higher than those who drove automatics. The researchers believe that the act of shifting gears may be arousing for some people, leading to increased attraction.

"Our results suggest that there is something about the physical act of operating a stick shift that might make it sexier," said lead author Dr. Michael Muthukrishna. "It could be that there is something inherently pleasurable about the control involved in moving your body through space."

The study is just one of many recent ones linking psychological factors to sexual behavior. In another study, researchers found that women who viewed erotic images while having their hearts measured by EKG electrodes experienced stronger physiological responses to the images. This suggests that visual stimulation can trigger powerful physical reactions in both men and women.

But why do some people find manual transmissions so sexy? Some researchers say it could be because it requires skill and dexterity to operate correctly. Manual transmissions also allow drivers to take greater control over their vehicles, which can be empowering. And then there are the potential fetishes - some people enjoy the sensation of being in complete control of their cars.

Whatever the reason, it seems clear that manual transmissions have the power to turn up the heat. So if you want to get your engine revving, consider giving them a try! Just don't forget to use caution when driving on public roads.