Watermelon is an unusual fruit source of the carotenoid lycopene and a rich source of phenolic antioxidants. ... Watermelon is a very good source of vitamin C. It is also a good source of pantothenic acid, copper, biotin, potassium, vitamin A (in the form of carotenoids), vitamin B1, vitamin B6 and magnesium.

If you're pregnant, the benefits are even more delicious. Watermelon eases heartburn and reduces swelling; its high water content (92 percent) and fruit sugars can help alleviate morning sickness and dehydration; and the minerals it contains can help prevent third-trimester muscle cramps.

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Today, farmers in approximately 44 states in the United States grow watermelon commercially. Georgia, Florida, Texas, California and Arizona are the United States' largest watermelon producers. This now-common fruit is often large enough that groceries often sell half or quarter melons.
Bananas are an excellent source of potassium, which helps to keep blood pressure at a normal level, which is important during pregnancy. It is also important for a healthy nervous system and kidneys. One medium banana contains 350mg potassium, which is around 12% of the recommended daily intake (RDI).