We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
Get up and move after every meal.
You don't have a go Lou Ferrigno or run a marathon but you have to do something.
When in doubt I get up and move some more, especially after sitting at the computer for awhile.
I am an advocate of regular exercise. I like to think it helps your long term health and longevity. But I don't really see convincing evidence. I think the single biggest factor for long life and good health is genetics. And of course abstaining from tobacco, drug and alcohol use.
There is always the chicken/egg problem. Do healthy people who will live longer feel more like exercising? The extent of exercise might merely be an indication of how long you are likely to live. The actual amount of exercise may be irrelevant to longevity. In other words, you exercise because you can. If you can, that means that you will live longer. The actual exercise accomplishes nothing.
However, I know iof vigorous people who died "young" and sedentary people who lived "forever". Predicting the future is tough.