For many people, coffee is more than a morning drink. It can be a familiar ritual that helps them feel alert, focused, and ready to begin the day.
But what happens inside the body after that first cup?
Coffee contains caffeine along with numerous naturally occurring compounds. Its effects can vary from person to person, depending on factors such as the amount consumed, individual sensitivity, sleep habits, and what else is included in the drink.
How Caffeine Affects Alertness
Caffeine is a stimulant that can temporarily increase alertness and reduce feelings of tiredness. This is one reason coffee can feel particularly helpful during an early morning or an afternoon slump.
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