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Positive Stimulant Effects of Caffeine

Caffeine is a mild stimulant, acting on the central nervous system and some other organs of the body, for example the kidneys. It also increases metabolic rate. Consumption of caffeine equivalent to that found in a couple of cups of coffee has been shown to improve alertness and enhance concentration.
Alertness and Mood

• Caffeine can increase the speed of rapid information processing by 10%
• A cup of regular (caffeine-containing) coffee after lunch helps to counteract the normal 'post-lunch dip' in ability to sustain concentration, aiding alertness
• Improve alertness and concentration during night shift hours

Conducted a study in 1993 to examine the effe...