People swear by this stuff to cure a hangover, and for good reason. It's insanely hydrating, and one carton typically packs more potassium than a banana—which is the key nutrient for feeling better fast. An added bonus of coconut water is that it’s more flavorful than regular water, which is helpful for people who have a hard time getting H2O down when they’re hungover. And while there’s no advantage to those flavored with fruit, there's no harm, either. “If the pineapple or tropical fruit flavors make it easier to get down, then I say go for it,” says Shames.