Regarding the walk you took at work: the problem is that even if you had opened the workout app and selected a walk, it wouldn't count it as exercise unless you were walking fast enough. That's the issue I have and what I feel needs to change.
I mean, what about a 70 year old with bad legs, he walks slowly but he takes hour long walks to stay healthy? Is he NOT exercising? (Apparently not to some of the people in this thread.)
Nobody here is saying it is not exercising. It's just not exercising per the "mysterious" parameters set by the watch. That makes little difference to the benefits of any sort of exercise. Who cares what some device arbitrarily defines as exercise?
It might be good to alter the parameters so the user can tailor the results to his or her needs, based on their particular circumstances. Obviously, a good workout means something different to a healthy 22 year old compared to a 70 year old with bad legs. Since age/height/weight/activity level are all requested before using the watch as an activity device, perhaps some more parameters could be used.