I think that one of the reasons that so few people workout is because they see exercise as optional, not a necessity. Why do most people brush their teeth? To prevent cavities and gum disease and, generally, to stop their teeth from falling out before the age of 40. Noone brushes their teeth because it's fun--we do it because we want to protect the health of our teeth. Exercise should be seen in the same way: Published, peer-reviewed studies (some of them randomized, clinical trials--the most reliable form of scientifically demonstrated evidence that exists) have shown that exercise prevents obesity, diabetes, heart disease, high blood pressure; it possibly prevents some forms of cancer and has been shown to help with depression and anxiety. So why shouldn't exericse also be considered a "should," just like brushing your teeth? I'm not talking about an all-out, full-blown commitment to an hour or more every day of the week, but just the bare minimum--moderate walking for 20 minutes, 3 times a week. In that way, I *do* see exercise as a "should." My 2 cents on the topic, of course. I understand the need for downtime, too--that has to be a part of life, as well.