Sleepwalking is a disorder that’s easily—and often—misunderstood. When you think of sleepwalking, what comes to mind? A groggy, wandering toddler, or a movie-style sleepwalker with arms outstretched?

Ever woken up to find your socks in the fridge or your keys in the sink, with no memory of how they got there? Sleepwalking isn’t just a quirky movie trope. It’s a real sleep disorder affecting people ...