Isn't it strange how the older generations ate stuff that today would be considered a no-no (everything cooked in gobs of lard, etc.) yet most of them weren't heavy. My mom's side is italian. Big ol' fat sausages, mountains of spaghetti and lasagna with meatballs in real gravy the size of your fist were the order of the day. Looking at pictures of my grandparents and great grandparents, there wasn't a heavy one in the bunch.
GOB, don't worry about finding time to fit an hour long workout into your schedule. Just do 5 minutes of something, anything to start. No matter how beat or tired from work you are, you can manage 5 minutes. That gets you in the habit, that is the most important thing. You can work up from there.