Other Effects of Caffeine Caffeine has a mild stimulating effect so will make a person less drowsy and therefore delay sleep. But some people sleep well after evening coffee, others do not. Excessive caffeine consumption, in the small percentage of the population who are sensitive to the stimulant effects of caffeine, may result in feelings […]
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Many scientific studies have shown that caffeine improves concentration, alertness, reasoning, intellectual effort and vigilance. (1-5) This effect can help counter `post-lunch dip’ in concentration, and overcoming drowsiness in motorists and nightshift workers thus reducing the risk of accidents. (6) The Department of Transport in its Think! Don’t Drive Tired campaign recommends a couple of […]