What is an effect that caffeine can have on the body responses? A Comprehensive Guide
                                
                                
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                                    4 min read                                
                            
                                Approximately 90% of adults worldwide consume caffeine daily to enhance alertness and combat fatigue. As a central nervous system stimulant, caffeine triggers a cascade of physiological responses throughout the body that range from beneficial boosts in performance to adverse side effects like anxiety and sleep disruption.