As the name would imply, watermelon is loaded with, well, water. According to a recent article on, when it comes to hydrating foods, “watermelon was on top of the list, thanks to its 92 percent water content and essential rehydration salts calcium, magnesium, potassium and sodium.” It also happens to be really refreshing, and on a really hot day nothing beats a juicy, sweet slice of this summertime treat.