Coconut water is the naturally occurring liquid inside young, green coconuts. It has 0 fat, 0 cholesterol and is low in calories. The main benefit of coconut water is that it is full of electrolytes to hydrate and replenish you after a workout, a hot day, or a long night of drinking.
Coconut water has more potassium than a banana, and 15 times the amount found in traditional sports drinks. Potassium helps prevent muscle cramping.
Some coconut water companies add juice to flavor their product, which can result in a lot of added sugar and calories, so you'll want to avoid that, but pure coconut water is a great alternative to artificial sports drinks and other sugary beverages.