kip down, hit the sack, hit the hay, sack out, turn in, go to sleep, retire, crawl in, make one's bed, put to sleep, more...

get up, stay awake, arise, awaken

fall on bed,   retire for sleep,   "hit the hay", say,   get ready for bed,   prepare for sleep,   head to bed,   sleep in the uk,   sleep early,   hit hay,   hits the sack