It's not how long you live, but what you do in that time. Both what you get out of it for yourself, and how your life affects others. Some people die in their

It's not how long you live, but what you do in that time. Both what you get out of it for yourself, and how your life affects others. Some people die in their 20s, but achieved more in that short life than others who live to be 100 (although I'll avoid to judge on how important any achievements are). Also: the article mentions exercise, and comes up with a modest 'ROI'. But it fails to mention that exercise may not only increase lifespan, but also improve health / general well-being during the years it's done. So the return in extra life may be modest, but the life-while-exercising tend to be fitter / healthier / happier years. And of course exercise carries some risk itself - especially if overdone. Risk vs. reward, with risks very dependent on type of exercise.