The Russian Sleep Experiment is a creepypasta which tells the tale of 5 test subjects being exposed to an experimental sleep-inhibiting stimulant in a Soviet-era scientific experiment, and has become the basis of an urban legend. The story recounts an experiment set in 1947 at a covert Soviet test facility, where scientists give test subjects a stimulant gas that would prevent sleep. As the experiment progresses, it is shown that the lack of sleep transforms the subjects into zombies.