Another thing to remember is how this is a fact detached from reality. It seems to imply that if you manage to train hard enough, you will have lower chances of

Another thing to remember is how this is a fact detached from reality. It seems to imply that if you manage to train hard enough, you will have lower chances of dying. But in reality if you are in the "high chances of heart attack" group, the training might be the thing that kills you, which is why being able to do the push-ups is a good indicator of having low chances of heart attack... This type of studies is just useless