Watermelon's Nutrients Support Good Health. Watermelon helps you do this, as it provides 25 percent of the daily value of vitamin C and 30 percent of vitamin A in each 2-cup serving. Watermelon also provides you with some calcium, iron and potassium, and is a good source of vitamin B-6, which supports your immune system.What does watermelon do for body?
Watermelon contains 92% water and thus, it helps to hydrate your body and impart a healthy look. When your body is hydrated, the production of collagen is promoted and you get a firm and young-looking skin. The acids contained in watermelon work have exfoliating properties to make your skin radiant.