You’ve probably seen them lining the supermarket shelves all over the United States: Fruit drinks made from Açai, the fruit only found in certain parts of the Brazilian rain forest. But surprise, surprise. The hottest Brazilian drink of the moment features nothing particularly exotic.

It’s coconut water.

That’s right: Coconut water.

Ad Age just named “Zico” one of the “Five Brands Bucking the Downtrend in Beverages.” Developed by American and former Peace Corps volunteer Mark Rampolla, he “discovered” the beverage while helping out in Central America. It is made in Brazil from using green coconuts and is being branded  as a natural sports drink. Over the last four years, the drink has grown 250% – with it being particularly popular in studios offering bikram, or so-called “hot,” yoga.

Hey, whatever floats your boat. Or at least keeps you hydrated.