Doctors warn of physical limits as China viral ‘flash step’ dance sends imitators to hospital

A dance move known as the “flash step” recently went viral on Chinese social media, inspiring countless imitations, memes and creative merchandise, including keychains. In September, Chinese netizens jumped on the bandwagon, copying moves from a dance tutorial video made in the 1990s. They were especially taken with three moves featured in the video: the “flash step”, “prodigal kicking the ball” and “black bear shaking fur”. As its name vividly suggests, the flash step is a rapid, side-to-side...