Similar to this: if you want to optimize your productivity*, do so on a timescale of at least weeks if not months or years.
Simple example: Can you get more done working 12 hours a day than 8? Sure, for the first day. Second day maybe. But after weeks, you're worse off in one way or another.
It's easy to chase imaginary gains like automating repetitive tasks that don't actually materialize, but some basics like sleep, nutrition, happiness, etc are 100% going to affect you going forward.
* I actually hate that word, and prefer saying "effectiveness". Productivity implies the only objective is more, more, more, endlessly. Effectiveness opens up the possibility that you achieve better results with less.
In Finland we have flex hours or "working hours bank", basically you can do extra work now and get free time later. You can also go into negatives.
Usually the recommended range is -20 to +40
Some People(tm) go into the negatives and think it's easy to "just" do an extra few hours every day. It's not.
What I do is work ~15 minutes more every day so I bank about a hour a week, sometimes a bit more. It's a LOT easier and more manageable. Just sit on my computer 15 minutes earlier or if I'm at the office I take the later train back home.
This way I tend to have a day or two of flex hours banked if I need to take some quick time off.
Finland is a "high trust" country, isn't it? I can't see this concept working working when > 10% of the population would game the system to get more "off-the-record" free time.
The flex hours are usually only for office workers where performance can be measured - sometimes it replaces overtime.
So the employer can "suggest" you work longer hours now when there's a ton of stuff to do (like end of year rush in accounting or payroll) and then you take days off when it slows down.
But yea, it's not something that's easy to police.
Simple example: Can you get more done working 12 hours a day than 8? Sure, for the first day. Second day maybe. But after weeks, you're worse off in one way or another.
It's easy to chase imaginary gains like automating repetitive tasks that don't actually materialize, but some basics like sleep, nutrition, happiness, etc are 100% going to affect you going forward.
* I actually hate that word, and prefer saying "effectiveness". Productivity implies the only objective is more, more, more, endlessly. Effectiveness opens up the possibility that you achieve better results with less.