While a professional politician might have their hard-working citizen cosplay down, us average Joes might not be as skilled when it comes to rolling up those long-sleeve shirts, especially when it's hot outside. You might lean toward tighter rolls, but that won't help if you're trying to stay cool.
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According to University of Southern California assistant professor Albert Vallejo, exposing your forearms to the air cools down the blood pumping through them, lowering your overall body temperature and sending signals to your brain that will make you feel cooler.
But rolling your sleeves a little too tightly will have the opposite effect. "The blood is going to have a slightly harder time getting through," Vallejo told Mel.
As a fan of both rolled Oxford shirts and Barack Obama's everyman look, I find this news to be detrimental to my aesthetic. Fashion is pain, and I like my sleeves positively medieval.