Cucumbers is mostly water. It's low in calories and loaded with nutritional value. Packed with Vitamin C, Vitamin K and Potassium. Not only are cucumbers great for hair and skin care, they are also a good source of Vitamin B for that quick pick me up instead of drinking coffee or soda. It rehydrates your body, helps fight cancer, promotes joint health, helps cure diabetes, and aids in weight loss and digestion. We heard it's a good cure for a hangover.