Pumpkins are my best friends. What we have in common is that you could actually see our seeds! Watermelons contain vitamin C, potassium, and magnesium. They also have 92 percent water and 8 percent sugar. The first recorded watermelon harvest occurred nearly 5,000 years ago in Egypt. Early explorers used watermelons as canteens. Watermelon's official name is Citrullus Lanatus of the botanical family Cucurbitaceae. Did you know that watermelon wasn't actually always sweet. Watermelon is rich in an amino acid called citrulline that may help move blood through your body and can lower your blood pressure. White Wonder watermelons are the rarest kind of watermelon! Using your two fingers on whole sized watermelons and making sure the dark green lines running across the outside are two finger lengths apart vertically. Watermelon was made over 5000 years ago! Crazy isn't it. The C. lanatus produces a fruit that is about 93% water, making it the majority of it water, hence the name “water” melon. Watermelon contains citrulline, an amino acid that helps open up blood vessels and boost bloodflow so thats why it makes you happy. Watery fruit and vegetables often contain levels of minerals and sugar that mirror this, so they can hydrate you more effectively than water alone. Having it at night can potentially make you take more trips to the bathroom, disturb your sleep. While bananas might be the first fruit to come to mind, watermelon actually reigns supreme when it comes to potassium. Chinese news outlet People. Reports that watermelon is a $290 billion industry in the country. Most of the watermelon produced in China is also consumed in China, with the Chinese population eating about 70 million tons of the fruit per year as of 2019. A large, yellow spot indicates that it spent more time ripening on the vine and should be sweeter.