Interfering with the actions of sodium ions
Yes, because it stimulates your central nevous system, causing you to wake up.
Coffee contains caffeine, along many other kinds of beverages. Caffeine is a psychoactive drug, meaning that its crosses the blood-brain barrier and acts primarily on the central nervous system. Caffeine stimulates the cortex of your brain, thus heightening the intensity of mental activity. This can result in a temporary feeling of alertness and, in the short term, banishes drowsiness and feelings of fatigue. In short, caffeine from coffee travels through the blood stream to the brain where it stimulates the central nervous system temporarily, thus making one feel more alert.
People should avoid taking much caffeine when it is being used as an over-the-counter drug and should consider how much caffeine is being taken in from coffee, tea, chocolate, soft drinks, and other foods that contain caffeine.
No. Caffeine and epinephrine are both stimulants. Caffeine stimulates the Central Nervous System (CNS) while epinephrine (also called adrenaline) stimulates the sympathetic nervous system. These both increase heart rate.
The central nervous system.
it stimulates the gastrointestinal activity
Caffeine is the most widely consumed central-nervous-system stimulant.
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stimulants
No, it is not. Caffeine is a central nervous system stimulant of the methylxanthine class. It is the world's most widely consumed psychoactive drug.
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Methampthetamines