Everything you wanted to know about coffee (1 Viewer)

[Max Leung]

...can be found at this site:
http://www.cosic.org

Following consumption, caffeine is readily absorbed into the blood and body tissues, and has a half-life of approximately four hours, although estimates for the half-life vary between two and ten hours. Caffeine does not accumulate in the body, being rapidly metabolised and excreted. Smokers break down caffeine more quickly than non-smokers (so the effects do not last so long), while pregnancy tends to slow down the rate at which caffeine is broken down, particularly during the last months. Women taking the contraceptive pill also metabolise caffeine more slowly.
Caffeine’s ability to enhance alertness and sustained attention has been well documented (see below), and its primary mode of action as a central nervous system stimulant is related to its property as an adenosine antagonist, although other physiological effects have also been well reviewed (1-5).

I believe the effects of caffeine are included too on that site.
Bleah, caffeine really messes with your sleep cycle (and so does alcohol).

 

[Frank Anderson]

Nectar of the Gods