Newport's sources showed that most people are capable of about four hours of deep work per day. If you hit that level, add in 2-3 hours of shallower tasks, and do it every day, you reach 200 "productive hours" in a month. I'm not sure how many people are willing or able to carve out two 3-hour blocks more than five days a week, but it seems highly worthwhile to step back once a month or quarter, with one's s.o. or family, if present, and think about what is possible and what makes sense in support of mutual goals. From there, in light of the goals and constraints, the article's breakdown for cultivating the environment, body, and mind are clarifying. Ok, I'm sitting down with my wife and doing this this weekend.
The gist of the article is what I try to practice, and I find the strategy refresher motivating. I have had good success with removing push notifications, removing the phone from the workspace, sleeping at the same time, regular breaks to stay limber, targeted muscle work (rowing during winter until it gets too boring, the Roam Strong workout plan currently), and reducing junk calories intake. I've had less success building deep work persistence by making streaks and subdividing tasks. I think it's time to force the break to a separate device for leisure.
How much is it worth spending on a CO2 monitor? As a remote worker, I'm in the same air space almost all day every day, so if there is a low grade problem, I'm cooked.