Right. Confused. Is it ok to go out for a run. And also to walk the dog later? Or must the dog walk be my exercise? Also is it that you can go out for one of the 4 reasons. But only once. Or could you technically go out for all these reasons. One at a time? I don't intend to go out for all of the reasons. I just feel myself getting so sedentary. And the dogs are rubbish running with me!