In one totally rad mashup [1], Taylor Swift [2]'s "Shake It Off" plays over an old exercise video from the '80s. There's a whole lot of spandex, jumping, and enthusiasm, which feels more than a little appropriate for Swift's song — her album is titled 1989, after all. The silly mashup comes after President Obama's "Shake It Off" singing [3], and a series of covers have also gone viral, including Walk Off the Earth's "Shake It Off" rendition [4] and Kelly Clarkson's take [5] on the popular track. Check out the hilariously cheesy mashup above.