Another way to say this is that, well past 60, life choices outweigh senescence. I also like to remember that at no time are we really using what capacity we h

Another way to say this is that, well past 60, life choices outweigh senescence. I also like to remember that at no time are we really using what capacity we have to the fullest. An activity like chess for instance requires 100% focus over the course of the game to really do well - that kind of workout has got to good for brain health, but it's extremely rare in modern life. Compare with everyday survival say 10,000 years ago, which might have required 100% focus for much of the day.