Now we've just traded one form of pedantry for another. Some would say your activity is exercise. Or you could say exercise is only stuff done for no other rea

Now we've just traded one form of pedantry for another. Some would say your activity is exercise. Or you could say exercise is only stuff done for no other reason than fitness, but your activity substitutes for exercise. In any case, the first paragraph of the CNN article makes it clear the distinction is "a sedentary lifestyle". Clearly if you are active, you aren't sedentary. Anyway, what the researchers studied is not self-reported fitness but treadmill testing as a measure of cardiovascular fitness. If your grocery- and kid-carrying habits allow you to do well on a treadmill test, then you "exercise" according to the parameters of what was studied.