Sleepwalking (somnambulism) is quite common but why do people do it? Is waking up a sleepwalking person bad for them? Let's find out! 

QUESTIONS: 

1. As per the video, why does sleep waking occur?

2. What would mental disorders be linked if sleepwalking persisted into adulthood? 

3. Have you ever sleepwalked? What did you end up doing?