Can I Have Two Cups of Tea at Night? A Guide to Caffeine and Sleep
                                
                                
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                                    5 min read                                
                            
                                Caffeine has a half-life ranging from two to twelve hours in the human body, meaning its stimulating effects can linger long after your last sip. This longevity raises a critical question for many evening drinkers: Can I have two cups of tea at night without compromising my sleep?