Watermelon is the fruit that contains the most water, almost 93%, and it is common to use it in diets to lose weight. It is adequate, yes, but it has many other principles that make it suitable for many more things. It contains mineral vitmainas, carbohydrates ... you just have to see this simple example. In every 100 grams of watermelon you consume you will have the following nutrients: -89 mg of potassium. -11 mg magnesium -4.6 grams of carbohydrates. -0.5 grams of fiber -20.5 kcal. -In addition to folic acid, provitamin A .