Originally Posted by andrewclaus

Here we all are, preaching to the saved. We've found the Fountain of Youth, and nobody believes us.

My anecdote: The other day a friend asked how, at a relatively young 66, I can do all the work see regularly sees me do. I'm retired, but I maintain six houses (rentals), volunteer building sets at a theater (carrying lots of 3/4" OSB @ 85 pounds), and volunteer on various trail crews doing a lot of rock work. She watched me replace the entire floor in a 900 sf house last winter, a lot of stoop labor and lifting. My answer--bicycling. There was one decade, in my 40s, when I wasn't able to cycle regularly, and I felt my fitness level slipping. I got back on the bike in my 50s and I'm still going strong. Ir hear the comment above about 60s vs 80s, and I'm starting to feel that coming.