Answer: insomniac

AnswerCrossword Clue
INSOMNIAC

Wakeful one

INSOMNIAC

Sleep lab subject

INSOMNIAC

Hardly a dreamer?

INSOMNIAC
Sheep counter
INSOMNIAC
"Late Late Show" viewer, maybe
INSOMNIACOne who's not out all night?
INSOMNIACOne watching a TV test pattern, perhaps
INSOMNIACPerson with no cause for alarm?
INSOMNIACOne who's not out for the night?