2. Don’t disturb a sleepwalker!
Many people believe that waking someone in the middle of a sleepwalking episode is dangerous – as in, it might cause a heart attack. This, however, is just an urban legend. Letting them sleepwalk is actually far more dangerous because they might unintentionally do harm to themselves. Some people have even been known to get into a car and drive while unconscious!
It is, however, true that waking a sleepwalker will result in intense disorientation. These episodes occur during the deepest stage of sleep, and forcibly yanking someone out of it will most probably confuse them, or even frighten. Therefore the best thing to do if you catch someone wandering the house at night would be gently steering them back to bed.