My grandfather lived into his 90s and as far as I know never "exercised". But during a lot of his life he split firewood and worked 8-hour shifts at a factory (

My grandfather lived into his 90s and as far as I know never "exercised". But during a lot of his life he split firewood and worked 8-hour shifts at a factory (before walking home for an hour or so) and did a lot of other things that would be much more vigorous than regular exercise. A different anecdote.