Sleep Disorders: Sleepwalking You wake in the middle of the night by a noise in your room. As you open your eyes you are confronted by your child, standing motionless next to your bed, staring at you like a zombie. Although it sounds quite frightening, this scenario is very common, particularly for parents of young children who experience sleepwalking. Why do people sleep walk? Let's attempt to unravel this mystery and discuss ways to prevent it.