What Happens if You Have 8 Cups of Coffee? A Deep Dive into High Caffeine Effects
                                
                                
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                                    4 min read                                
                            
                                The Food and Drug Administration (FDA) suggests that up to 400 mg of caffeine daily, or about four cups of coffee, is safe for healthy adults. Consuming 8 cups of coffee can push your body into a state of severe overstimulation, triggering a wide range of distressing physical and mental side effects far beyond a simple energy boost.