A recent study indicates that as many as one-third of adults have sleepwalked at some point in their lives, and researchers believe that you're more likely to walk in your sleep if your parents did the same.
Most common in children between the ages of 4 and 8, sleepwalking is the state of being halfway between fully awake and fully asleep. During an episode, the brain of a sleepwalker does things that it would do in wakefulness but will not recall in the future.
While experts don't exactly know what causes a person to sleepwalk, but they suspect that sleep deprivation, illness, medication or alcohol can be contributing factors.
Dr. David Schulman, the director of the Sleep Laboratory at Emory University in Atlanta, says that when you encounter a sleepwalker, it's best to redirect them back to bed rather than trying to wake them up.