My friend Ron Allan forwards a lot of interesting material to me, and I acknowledge him as the source of the following two slivers of good advice:
     Dietary:  “Eat what grandma used to eat.”
     Life style: “Exertion and exercise, like grandpa used to do.”

That’s not an either/or thing, by the way.  If you eat dripping sandwiches and treacle pudding, as many grandmas did not so long ago, you need to do 10 hours of hard physical labour six days a week.