I don't consume caffeine anymore, I used to drink an entire pot of coffee every morning though!
Caffeine
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is the world's most widely consumed psychoactive drug. 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.
Caffeine
be) + used to].
"I used to drink black coffee" means that in the past I drank black coffee, but now I don't. "Used to" describes an action that did happen, but does not happen now.
- When I was younger I used to play with toys, but I don't anymore.
- Before I passed my driving test, I used to cycle.
- I am used to something.
- I am used to drinking black coffee.