Well then, the wonder drugs are really working amazingly well. I've seen more feeble 70-year-olds! Good for him.
Thanks, buddy. Yea, on the clean living thing, dad actually smoked cigarettes for a number of years, though that was a time before I can remember. I do remember him smoking a pipe (he had quite a collection of pipes) when I was a boy. I remember him giving those up sometime in the 1970s, and taking up chewing tobacco, which he quit sometime in the 1990s after his heart attack. Other than that, the only bad habits I can think of is he thinks he has to have some kind of dessert after every meal. Though he had a sedentary job (finance) he always loved to do outside work (gardening, planting trees, cutting firewood, etc.). Until I left his house, I remember all through high school and part of college, many, many Saturdays we went and cut firewood at his brother's house (a load for us, and a load for his brother, who worked with us and was older than dad and a 101st Airborne WW2 vet), hauled it home, split it with a maul (that was mostly my job) then ricked it up. He still burns firewood to this day, but now he buys it at the sawmill.
Anyway, I attribute his longevity to both genetics and an active lifestyle.