You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what is it called when u cant move in your sleep?" whose answer is Sleep paralysis.
Each document should contain about 30 words, and these documents should contain useful information.

Query: what is it called when you cant move in your sleep
Useful Output:

Doc 1: Sleep paralysis happens during transition points in your sleep cycle. This means it can happen right as you are falling asleep or when you are
Doc 2: In any sleep behavior disorder or during nightmares, atonia does not occur properly and the voluntary muscles move while the mind remains asleep
Doc 3: It is called “sleep paralysis”. It usually happens when you are in bed, in a falling-asleep (hypnagogic) or waking-up (hypnopompic) state of
Doc 4: You're waking up or falling asleep, and suddenly you're unable to move. Your body becomes paralyzed as if an unseen weight is upon you.
Doc 5: Later, I found a name for what had happened to me: sleep paralysis. It's a surprisingly common night-time condition in which part of your brain