The most crucial factors for a long life , I do believe, are partly in the genes; number two is lifestyle, including balanced diet and typical exercise. I walk, work and move every day. However, I do believe a lot of workout is also detrimental due to over-stress; occasionally those who workout too many hours per day die early.
The good point about’Arrow’is we never claim never on the show. Hopefully the show may have a good long life , and all manner of points can potentially happen.