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Message: [QUOTE="VITOS, post: 6218360, member: 233267"] I drink coffee while playing, and that's why. Caffeine acts as a stimulant, activating the central nervous system. Short-term benefits include increased attention, improved cognitive performance, and improved athletic performance. Mitigates the adverse effects of sleep deprivation. In rested people, caffeine in low and moderate doses, approximately from 30 to 300 mg, improves alertness and reaction time. In people suffering from sleep deprivation, caffeine helps in learning and decision-making, as well as in driving a car and even an airplane. People who usually drink coffee and tea do better on various cognitive activity tests, such as reaction time and visual spatial thinking. [/QUOTE]