Matching Pairs Vocabulary sleeping habitsOnline version Match the expression with the correct definition by Pedro Torres Hernandez 1 nod off 2 toss and turn 3 be wide awake 4 feel drowsy 5 be fast asleep 6 be sound sleep 7 to take a power nap 8 drift off 9 sleep like a log to sleep very soundly , so well that noises don't even wake you up. to move about and turn over in bed because one is unable to sleep tossing and turning all night sleeping deeply to take a brief sleep during the day in order to improve one's alertness and ability to work efficiently throughout the remainder of the day sleeping in a way that makes it difficult to wake you sleepy and having low energy you gradually fall asleep Someone who is fully awake and unable to sleep fall asleep unintentionally.