A recent study that appeared in Medicine & Science in Sports & Exercise gave coconut water a big thumbs up for replenishing body fluids just as well as sports drinks—and even better than water. Coconut water, not to be confused with its high calorie cousin coconut milk, is water that’s tapped from young green coconuts. It contains potassium, and is sometimes fortified with added sodium which helps active people retain water when they perspire. “Compared to typical sports drinks, coconut water has fewer calories and less sodium, but higher amounts of potassium,” says Dr. Glatter. “As long as you enjoy the taste, coconut water may be better at keeping you hydrated for light recreational exercise than a sports drink or water, according to recent studies.” It’s generally found without added sugars, but does contain about 60 calories per 11 ounce serving.