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.

Caffeine is a bitter, white crystalline purine, a methylxanthine alkaloid, and is closely related chemically to the adenine and guanine contained in deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). It is found in the seeds, nuts, or leaves of a number of plants native to South America and East Asia and confers on them several survival and reproductive benefits. The most well known source of caffeine is the coffee bean, a misnomer for the seed of Coffea plants. Beverages containing caffeine are ingested to relieve or prevent drowsiness and to improve performance. To make these drinks, caffeine is extracted by steeping the plant product in water, a process called infusion. Caffeine-containing drinks, such as coffee, tea, and cola, are very popular; in 2005, 90% of North American adults consumed caffeine daily.

Read more
This page contains text from Wikipedia, the Free Encyclopedia - https://wn.com/Caffeine

Podcasts:

Email this Page Play all in Full Screen Show More Related Videos
PLAYLIST TIME:

THE ONE

by: Prince

If U're lookin' 4 the man that will walk away from responsibility
I ain't the one {x3}
And if U're lookin' 4 the brotha that'll treat U like anything but a
queen
I ain't the one
But if U're lookin' 4 a man that'll sweep U off your tired weary feet
Pay your bills, buy U pretty dresses
And take U anywhere U wanna eat
Make love 2 U every night of the week
Oh, don't think it over, girl
Look no further
I am the one
Oh yes I am
If U're lookin' 4 a man that'll make big money
And keep it all 2 himself
I ain't the one
No, no - not me
And if U're lookin' 4 a man that'll have 10 women
And confuse it all with his wealth
Listen here, I ain't that one
No, no no - wait a minute
If U're lookin' 4 a man who can share his dinero (His money)
Buy U half the town (Half the town)
Treat every step U take (Every step)
As if U're walkin', huh, on holy ground (Holy ground)
Place U, place U above all others
When it comes, when it comes 2 the gettin' on down (Down)
Look no further, ooh
Your man's around (He's around)
Oh yes he is
He's standing right here, right here (Right here, right here)
Don't U look no further, girl
He's standing right here, right here
(I am the one) {x2}
If U're lookin' 4 a man that'll make U feel like time has just begun,
A man that'll make U feel like U're the only thing that ever
mattered
Underneath the sun, underneath the sun, ooh
If U're lookin' 4 somebody
Who will turn your bad day into one long night of fun
Look no further, baby
I'm… I'm the one
Oh yes I am
I am the one
Don't U look no further, girl
Oh, I am the one
Oh yes, oh yes, oh yes, oh




Latest News for: theine

Edit

Myanmar Earthquake | NDRF Team Begins Rescue Operations At The 'U Hla Thein' Monastery | News18

News18 31 Mar 2025
NDRF team has begun rescue operations at the 'U hla thein' monastery where around 170 monks are still stuck. n18oc_world News18 Mobile App - https.//onelink.to/desc-youtube ... .
Edit

Operation Brahma: Teams begin rescue ops at U hla thein monastery

The Times of India 31 Mar 2025
.
  • 1

Article Search

tools
×
×
×
×