"MY VOCAB PRACTICE."

1. Somnambulist:
   My friend was taking sleeping pills, which turned her into a somnambulist whenever she took one.

2. Insomnia:
   She has suffered from insomnia for many years and has taken sleeping pills her doctor prescribed.

3. Somnolent:
   She said the problem is that she's rarely somnolent because her brain is always on and her mind is always racing.