I wonder if running [or jogging] isn't actually all that good for you on a regular basis?
It makes me wonder too. Some chap that worked for the education department here and always visited schools to see how everything was going was an absolute bore on how healthy he considered he was - refused to drink anything but bottled mineral water, had never eaten meat, poultry or fish, would never eat anything sugary or artificially sweetened, never ate bread or potatoes and ran a couple of marathons ever year (and ran every day locally as well); it was the air of superiority I think I disliked about him. One day, he arrived at the school and he seemed quite morose. I asked him if he was okay and he had recently been told by specialists that he had advanced heart disease. I really did feel sorry for him - a life denial and, imo, excessive exercie regime and for what?
I also used to work for a university lecturer who may, for all I know, still hold the world record for discus throwing or hammer throwing, whatever it was, in the Olympics. He used to lecture at the School of Sport and Exercise Sciences and would exercise, on the rowing machine in the basement, every day before teaching along with other various forms of exercise. He was found dead one morning on the rowing machine at the university following a heart attack and he was only in his late 50s. Such a shame - he was a really nice, kind, gentle man.
RIP Rik.