Caffeine is a drug or chemical found in plants.It can be harmful for both humans and animals if a large amount is consumed. If a person ate grams of caffeine quickly, between cups of coffee, it would kill them..Caffeine is a central nervous system CNS stimulant of the methylxanthine cl 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..The earliest credible evidence of coffee drinking appears in Yemen in southern Arabia in the middle of the th century in Sufi shrines. It was here in Arabia that coffee seeds were first roasted and brewed in a similar way to how it is now prepared..Caffeine is a readily available stimulant. Many people rely on the morning dose of caffeine from a cup of coffee or tea, and others use soft drinks or energy drinks to keep them going throughout the day..
Caffeine is a central nervous system CNS stimulant of the methylxanthine cl It is the world’s most widely consumed psychoactive drug. Unlike many other .Coffee is a brewed drink prepared from roasted coffee beans, which are the seeds of berries from the Coffea plant. The genus Coffea is native to tropical Africa .