The main factors for an extended life , I do believe, are partly in the genes; number 2 is life style, which include healthy diet and normal exercise. I go, work and swim every day. However, I think an excessive amount of exercise is also poor as a result of over-stress; sometimes people who exercise too many hours per day die early.
The great point about’Arrow’is we never claim never on the show. Ideally the display may have a great long life , and all types of points could possibly happen.