Aerobics videos from the 1980s are amusing enough when they’re not set to contemporary pop songs. As SNL’s Stefon would say, they’ve got everything: spandex unitards, glistening pearly whites, and an overblown enthusiasm that’s become unfashionable in the ensuing years. But set one of these heart-pumping videos to the number one pop song in the U.S. and you’ve got a viral sensation on your hands.
YouTube user Thomas Jung not only found an aerobics video that matches Taylor Swift’s “Shake It Off” within a fraction of a beat, but he found one from 1989, the year of Swift’s birth and the title of her latest album. The dozens of aerobicisers clap, pump and shimmy so enthusiastically to the song that it’s hard to imagine that they could have been dancing to any other music.
This workout is no joke, and if you find yourself unable to keep up with the moves, don’t despair: There’s still one copy of the Crystal Light National Aerobic Championship Workout available on VHS on Amazon.
PHOTOS: See Taylor Swift Over the Years
John Shearer—WireImage/Getty Images