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One systematic review and meta-analysis confirmed that caffeine can improve mental performance, particularly in tasks that require sustained concentration and vigilance
[DOI] [PMC free article] [PubMed] [Google Scholar] [151].Belyaeva EA, Sokolova TV, Emelyanova LV, et al
Another manufacturer recently told the LA Times that hundreds of athletes from each league take the spray
doi: 10.4103/1673-5374.160082
