Sleep paralysis is like when you wake too early from a dream, and your waking and sleeping brains collide. Many see vivid and terrifying visions, and feel unable to move. This is a sleep disorder that more than twenty-percent of us will experience in our lifetime, yet is it not well understood. Meet Dr. Baland Jalal, who went from suffering from sleep paralysis to becoming an expert working on a cure.Learn more and submit your own sleep questions at www.vox.com/areyousleepingAnd, let us know what you think of the show at www.vox.com/surveyLearn more about your ad choices. Visit podcastchoices.com/adchoices