Something you probably don’t know: this low-calorie vegetable has a high water content compared to others. It’s rich in vitamin C, essential to stimulate the immune system. This natural antioxidant is also essential for collagen production and protects your body from damage caused by free radicals, compounds that are destructive to your cell structure. A medium-sized cucumber provides the body with 18% of the necessary folic acid and 10% of the vitamin B5 it needs, making it essential in our day to day life.