摘要：Abstract This research shows the influence of caffeine, energy drinks and of the combined effects on the reaction time and on the performance concerning answers tasks to visual and auditory multiple stimuli, concentrated attention in monotonous and repetitive tasks as well as memory and thinking processes such as comparison and analysis. Results have highlighted that caffeine and its combined effect with energy drinks enhances the mentioned performances of young students and energy drinks consumption alters the decision time and the thinking process creating a state of uncertainty and confusion, reducing fatigue and imprinting an energetic rhythm in tasks solving.
