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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,......

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Approximate Pages: 3 (250 words per double-spaced page)

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