What is caffeine?
Caffeine is a stimulant that people ingest in order to get a boost of energy.  One of the most common forms of ingested caffeine is coffee.  Caffeine gives you energy for a short while but it is often followed up with a feeling of being tired, sleepy or lethargic.  People use caffeine as a performance enhancer, mood and brain booster and increased alertness.
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Answer the following query.
What is caffeine?

user
Caffeine is a stimulant that people ingest in order to get a boost of energy.  One of the most common forms of ingested caffeine is coffee.  Caffeine gives you energy for a short while but it is often followed up with a feeling of being tired, sleepy or lethargic.  People use caffeine as a performance enhancer, mood and brain booster and increased alertness.
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