Watermelon
Refreshing, juicy watermelon is one of the most-hydrating summer foods. Not only that, but its pretty red hue means it's a concentrated source of lycopene — the same heart-protective compound found in tomatoes. You absorb more lycopene when you eat it with fat, so try watermelon drizzled with olive oil in a sweet and savory summer salad, or brush it with oil and grill it.
