Ninety percent of Cucumber comprises of Water, which is an essential part of the human body. It keeps you hydrated and healthy. Cucumber are also rich in Antioxidants, Potassium, Magnesium, Manganese and so much more. With just 16 caories in a cup full of Cucumber, it is also great for you if you are trying to lose weight. You can preserve it as a Pickle or add it in your Salad.