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Water isn’t actually the most hydrating thing you can drink. Here’s why each of these beats it: Raw milk: The fat, protein, and natural sugars slow fluid absorption, so it stays in your system longer instead of passing straight through like water does. Orange juice: Same mechanism, the natural sugars and electrolytes help your body hold onto the fluid instead of flushing it out fast. Coconut water: Naturally high in potassium and electrolytes, which is what actually drives hydration at the cellular level, not just fluid volume. Pomegranate and watermelon juice are high water content plus natural electrolytes and antioxidants, still a step up from plain water for retention.