The watermelon (Citrullus lanatus) is a large, sweet fruit originally from southern Africa. It’s related to cantaloupe, zucchini, pumpkin, and cucumber. Watermelon is packed with water and nutrients, contains very few calories, and is exceptionally refreshing. What’s more, it’s a good dietary source of both citrulline and lycopene, two powerful plant compounds. This juicy melon may have several health benefits, including lower blood pressure, improved insulin sensitivity, and reduced muscle soreness. While watermelons are predominantly eaten fresh, they can also be frozen, made into juice, or added to smoothies.