I find consumer vs producer to be very interesting and useful distinction. Sometimes very enlightening and somewhat scary when applied to personal time spending.
One might argue that everything we produce lends itself to some kind of consumption. Moreover, not all actions lead to tangible "products", but they can lead to useful results and experiences. Sports and games are an example.
Perhaps production tends towards consumption but not the opposite. If I make music I'll probably listen to it. But I can easily listen to music without making it.
And agree sports are an interesting example. It kind of fits my mental model of consumption in many ways: something you do that's primary effect transforms you. Watching TV, playing a game, etc. The effect being something chemical that is satisfying. I guess with sports or exercise the internal change is more physical (muscle, endurance, etc) vs chemical. Although I suppose you are acting on the world as well - you are scoring a point or advancing a position. It's just more ephemeral (ends when game ends) and arbitrary.
Im sure even just in terms of chemical reactions there is going to be a clean split between stuff like playing video games or watching TV vs. sports, building something, etc. Dopamine vs... ?
