Exploring the Science of Hydration: What Liquid Gives the Most Hydration?
                                
                                
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                                    4 min read                                
                            
                                According to the Beverage Hydration Index (BHI), a metric used to compare the hydrating potential of different drinks, plain water is not always the most hydrating liquid over a longer period. Understanding **what liquid gives the most hydration** requires looking beyond simple water content to see how electrolytes, carbohydrates, and protein affect fluid retention.