From Red Bull to Rock Star, one thing’s for sure: there’s no shortage of gimmicky energy drinks on the market. Whether your swilling antioxidant-rich pomegranate juice or mixing your cocktails with açaí vodka, your healthy-and-hydrating beverage intake has come a long way since the glory days of Gatorade.

But there’s a new kid in town, folks. And she’s a the best kept secret among those long, lean, and oh-so-perfect Brazilians. Think this could be some rare, never-before-discovered nectar from the Amazon? Think again. It’s water. As in, 100 percent pure coconut water. Or, as those in the southern hemisphere call it – agua de coco. Yep, that’s right. Not coconut milk but, rather, the water the fruit produces when it’s young.

Research shows that one coconut’s water serving has zero fat, no added sugar, and is only 60 calories. Not to mention, water from one baby coconut has more potassium than two bananas and is rich with electrolytes and minerals. In fact, this sweet stuff is so good for you, that they use it in hospital IV’s in countries that cannot afford saline.

The four chart-toppers available in the States are O.N.E. – notably Gisele’s personal fave, Harvest Bay – isotonic coconut and açai coconut waters from Brazil,  Zico – comes in various fruit flavors (some don’t love the mouthfeel of sweet flavorless water), and Vita Coco – the easiest to find due to its commercial success.

So stock up on this proven hangover cure and hydration sensation.

Just don’t go nuts.

Photos courtesy of Flickr and Zico.