Should You Drink Cold Water When You're Hot? The Surprising Science
                                
                                
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                                    4 min read                                
                            
                                According to a 2013 study, drinking cool tap water (~16°C) may be the optimal temperature for rehydration in dehydrated athletes. This often contradicts the common impulse to grab ice-cold water on a scorching day, raising the question: should you drink cold water when you're hot?