Yea, drugs and other stuff aren't going to cause sleep walking....

Your one of the few who does it... (most likely you wont' any more... due to maturity)

It has something to do with the arousal of your body when technically your "brain" is still asleep. So throwing blankets at someone or other subtle things to wake them during their sleep would cause that. Other things can be extreme stress or anciety. When someone is unsettled they might sleepwalk if their prone to it.

People in the sleepwalking state are basically in the highest point of hypnosis (The deepest part of sleep, the point where you are most easily hypnotized) Of course in the natural sleep your not listening to the outside usually, so unless you can talk to the sleepwalker their not going to listen to any 'suggestions'.

all of us turn into zombies at that part of the night.

Hey wouldn't it be cool to go to bed and the and then realize in the morning that all your work is completed because you sleepwalked and did it all....? I wish we could do that.

-Daniel