Is watermelon healthy or is it mainly just water?

Healthy & yummy!: Watermelon has no fat, cholesterol or salt. It is pretty low in calories, too. It has some fiber, a bit of calcium and iron and protein, and a decent amount of Vitamins C and A. Good stuff! Plus practicing spitting the seeds can lead to a prize in some local fairs in a Seed-Spitting Contest (exercise is good). Here is a fact sheet about it and other fruits and veggies: http://tinyurl.com/mcotn3r

Lycopene: watermelon is high in lycopene which has been shown to help prevent prostate cancer in men.