What Am I?

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Across
  1. 3. I will stop you breathing in your sleep and pick on obese people more
  2. 4. I will cause you to be attacked by REM sleep for five minutes at the most inconvenient of times
  3. 5. I make it hard for you to fall asleep. Taking sleeping pills will make it worse.
  4. 6. I scare people in the early hours during REM sleep
Down
  1. 1. I am nonsense words people say in any stage of sleep
  2. 2. I also get called somnabulism and run in families