CaffeineThere is no magic bullet that can help increase IQ or make you smarter-but there is a certain substance-caffeine-can invigorate and help you concentrate more. Caffeine found in coffee, chocolate, water, and some medications. However, no long-term effect, but in certain moments, caffeine helps bring alertness to the mind. The problem is the use of caffeine has to some extent, shalt not abuse by too much caffeine can cause feelings of restlessness and irritability.
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