If you’ve ever wondered how to integrate your sweatpants into your work wardrobe, you’re in luck. Recently Mr. Porter, the menswear site of the Yoox Net-a-Porter Group, which bills itself as “the world’s biggest luxury fashion store,” published a video on how to wear sweatpants. It describes three different scenarios in which guys may choose to wear their sweats, including to the gym, for lounging around “the morning after,” and “during the week”—meaning to the office. “Not everyone will welcome sweatpants in their place of work, but if you’re a freelance or creative type, many brands are offering smart, tailored versions that will just about fly for professional use,” the narrator says cheerfully. “Wear them with a fine-knit turtleneck and an unstructured blazer.” The video, without any apparent intent, acts as a brief summary of the cultural evolution of sweatpants. First they were intended as gym clothes, then became part of casual wardrobes, ideal for “the morning after” as Mr. Porter puts it. But dress codes aren’t static. In countries such as the US, they keep loosening up, and items that were once relegated to our leisure time keep creeping into our workplaces. Clearly not everyone is ready for it. Read more at Quartz.