Almost every student has an encounter with using caffeine as a study aid in university or college, or at work to get ready for the day. But few understand what caffeine is, where it comes from and what effect it is actually having on their bodies besides keeping them awake.
Most people know that coffee, tea and cola have caffeine in them. As a general rule, coffee has the most amount of caffeine in it, followed by tea and cola. Caffeine can also be found in chocolate and some painkillers, but generally in very small amounts.
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