I kind of want to pick up a martial art, as I need to get in shape and the exercises I do already arent doing much of an impact.

So, heres what I want to know. Im a pretty big guy, about 6 feet tall and about 240. I want to know a martial art that plays to my size, but I want something thats reasonably adaptable if I end up needing to defend myself. furthermore, I don't know any Decent martial art schools in Delaware, especially around dover/smyrna. you guys think you can help?