-Exercise One- Match the expressions with the correct definition. A heavy sleeper a light sleeper insomnia go out like a light not sleep a wink/not get a wink/not get a wink of sleep a- medical condition where one cannot sleep properly or sleep enough b- fall asleep or lose consciousness suddenly c- one who can sleep through noise or distractions d- not sleep at all e- one who cannot sleep though noise or distractions; easily awakens List as many expressions as you can that mean "to start sleeping" -Exercise Two- sleep something off oversleep sleep like a baby sleep through sleep easy sleepwalk sleep on it snug like a bug in a rug sleepover sleep rough early to bed and early to rise, makes a man healthy, wealthy and wise