Productivity shouldn’t be measured in absolute numbers (tasks per day, lines of code per sprint, etc), but holistically, keeping track of many other variables.
It’s not something you do every once in a while, it’s a state you want to be for as long as possible.
Productivity shouldn’t be constructed as a consuming activity (generating stress, fatigue) but as an inclusive one, integrated at all levels, and supportive.
It should allow procrastinating, if it’s creative, and it should avoid doing stuff just for the sake of being busy.
Productivity happens in more than one “realm” – it’s not only a function of “Do”, but also depending on “Assess” and “Decide”.
If all three realms are in balance, and none of them is overlapping with the others, then you are enjoying natural productivity.