Abstract:Introduction: Sleep is defined as the natural, periodic and reversible decrease in perception of the external environment, with the preservation of a certain degree of reactivity to the environment and autonomous functions. Sleep consists of 2 phases, REM phase and NREM phase, these phases alternate at night in the form of five to six cycles; of which the NREM phase is 75% presented and the REM by 25%.Thertita mark: Caffeine is a readily available short-acting stimulant that has been shown to reduce some of th… Show more
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