There is no question that getting sufficient exercise is important for health. I guess I don’t do as much as I should but I do have a few 20 minute walks each day and play golf 2-3 times each week which involves over 10,000+ steps per game on a 6000+ metre course. I don’t go to the gym but I do some stretching exercises most days.
I do wonder if moderate exercise isn’t more sensible for almost all of us – perhaps all – than running marathons and engaging in similar high physical stress activities. There is some evidence that extreme physical stress damages the right side of the heart – the part that pumps blood to the lungs. The desire to push things seems to be part of the modern mania to push things to extremes. It is also inadvertently masochistic – the underlying idea is that if it hurts its got to be good for you. Rubbish, it probably just damages you.