The most crucial factors for an extended life , I think, are partially in the genes; number 2 is life style, which include healthy diet and standard exercise. I walk, work and swim every day. However, I do believe too much workout can be detrimental because of over-stress; occasionally people who exercise too much time each day die early.
The nice issue about’Arrow’is we never say never on the show. Ideally the display could have a good long life , and all manner of points could happen.