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Submitted by JohnnyUtah on April 7, 2008
Category: Social Issues
Words: 726 | Pages: 3
Views: 166
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Caffeine, a odorless slightly bitter substance that is in most caffeinated beverages.
Caffeine is present in about 4% of tea leaves and in coffee. Caffeine contains two other
alkaloids, theobromine and theophylline. These two relax the muscles while the caffeine
stimulates the heart and respiratory systems. The caffeine in a substance is a stimulant of central
nervous system, cardiac muscle and respiratory system. Its purpose is to delay fatigue. The
theophylline is a cardiac stimulant that smoothes muscles. The theobromine is a smooth muscle
relaxant and cardiac stimulant. Sometimes you notice that colas have a "stronger kick" than
some coffee, its because the colas have a lower caffeine content and they have other alkaloids in
them. Normally coffee seems more lasting for mental alertness and offers fewer jitters.
Theophylline has a stronger effect on your respiratory system and heart than caffeine, and is
often used for a home remedy for treating asthma, bronchitis and emphysema. Barq's cola
contains "12.78mg per 6oz" of soda and they say it "adds as a flavoring agent for the sharp
bitterness".
Caffeine stimulates the central nervous system. It can cause mild alertness, tension,
shortened reaction time among some users. Its reactions on creativity and other intellectual
activities is yet to be determined. Caffeine is very addicting, and if regular users give it up they
can experience withdraw. They will induce symptoms 12-16 hours after caffeine intake:
drowsiness, headaches, depression and occasional nausea. A caffeinated soft drink drank by a
child can have the same effect as four cups of coffee on a adult. Caffeine doses more than
200mg depending on body weight and connotation, may produce trembling ,nervousness,
muscle tension, and exhaustion. If u drink coffee to stay up all night cramming...
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