Does Coffee Help You Focus Better? The Science Behind the Boost
                                
                                
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                                    4 min read                                
                            
                                According to the FDA, up to 400 mg of caffeine per day is considered a safe amount for most healthy adults, and is roughly equivalent to four cups of brewed coffee. This widely-consumed stimulant has long been praised for its ability to sharpen focus and boost concentration, but its effects are more nuanced than many realize.