Another thread I was watching turned into a conversation about old people and exercise.
What do you consider sustainable exercise?
Who do you know, or know of, who is still exercising at advanced age, and what do they do? How long have they done it?
What do you consider unsustainable exercise? What would break you down over time instead of maintaining you?
And do you think that what you do trumps genetics, or do you think that the old people who are athletes are genetically gifted and that's how they are able to continue so long?
Also anything else you want to add, of course.