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Caffeine is a central nervous system stimulant that may reduce fatigue and drowsiness. [10] At normal doses, caffeine has variable effects on learning and memory, but it generally improves reaction time, wakefulness, concentration, and motor coordination. [56][57] The amount of caffeine needed to produce these effects varies from person to person, depending on body size and degree of tolerance. [56] The desired effects arise approximately one hour after consumption, and the desired effects ... Learn more about Caffeine uses, effectiveness, possible side effects , interactions, dosage, user ratings and products that contain Caffeine . Caffeine is best known for acting as a mild stimulant to the central nervous system that quickly boosts alertness and energy levels. It has also been associated with health benefits for treating cardiovascular problems, type 2 diabetes, regulating weight gain, stroke prevention, and improving physical activity levels. On the flip side, there is an equal number of health concerns associated with its consumption. Common ones include headaches, jitters, and anxiety after consuming caffeine ...
