wake up
wake up
awaken, rouse from sleep; make alert
woke up
arouse from sleep, awake
Wake Up
Caffeine
Caffeine is a
central nervous system (CNS)
stimulant of the
methylxanthine class. It is the world's most widely consumed
psychoactive drug, but — unlike many other psychoactive substances — it is legal and unregulated in nearly all parts of the world. There are several known mechanisms of action to explain the effects of caffeine. The most prominent is that it reversibly blocks the action of
adenosine on its receptor and consequently prevents the onset of drowsiness induced by adenosine. Caffeine also stimulates certain portions of the
autonomic nervous system.
wake up
Verb
1. cause to become awake or conscious; "He was roused by the drunken men in the street"; "Please wake me at 6 AM."
(synonym) awaken, wake, waken, rouse, arouse
(hypernym) change, alter, modify
(hyponym) reawaken
2. stop sleeping; "She woke up to the sound of the alarm clock"
(synonym) awake, arouse, awaken, wake, come alive, waken
(antonym) fall asleep, dope off, flake out, drift off, nod off, drop off, doze off, drowse off
(hypernym) change state, turn
(entail) sleep, kip, slumber, log Z's, catch some Z's
wake up
awaken, rouse from sleep On Saturday I usually wake up around noon. I sleep in.
如梦方醒
ru2 meng4 fang1 xing3
Like waking up from a dream.Alternative form: 如梦初醒 (ru2 meng4 chu1 xing3).