Research has shown that historically humans have had a biphasic sleep and energy pattern (within 24ish hours), that doesn’t fit in neatly with the industrial revolution’s “workday” ideology (or the modern iteration of 9 to 5). So I think your two productivity chunks are more common than we realize!
Remember, both Churchill and JFK would work in the morning, nap in the afternoon, work into the late evening, sleep for a bit, and then start it all over. Churchill said it was how he got extended workdays compared to average 9-5 workers (or something like that). Churchill also started his morning work from bed, in his PJs, by checking in with staff, dictating correspondence, getting updates, etc, all while he breakfasted, bathed, and readied himself to go to his office or meetings.
As far as what the article recommended, what’s important is finding a sleep/energy workplace best fit for your own specific sleep/energy patterns, and then building a sustainable productivity routine.
The world would be (more?) doomed if it depended on me being awake, alert, and/or active for any constant 8-hour period, or soundly asleep for 8 consecutive hours!
By the time I get around the conceptualizations and fancy formulations - Ima be having a midlife crisis or two…I laze around and work in tiny intense spurts and then laze around - eat, sleep, read, supplement, rave, repeat…
“As a business owner, there are often 1,000 things that need to be done yesterday and 1,000 more that need to be done today.”
I don’t think I buy this. And if one doesn’t, it brings into question whether some or all of the strategies are actually strategies.
As a business owner, there were always things which one could spend one’s time doing, but would not contribute to the growth or profit of the company. Some of them were alluring and wasteful, others were distasteful and wasteful.
I usually found that I had an instantaneous ability to triage what was productive, and ignore that which was not. No Eisenhower like categorization because the time spent doing that was not productive.
I knew when I was building companies what activities needed doing, and knew full well what activities I was doing were attractive and non-productive. When growing a business, working 80 hours a week or more, can be as invigorating as any other potential activity When a business is failing, even 20 hours are too many.
Needless to say one’s assessment of what is growing and what is failing can be self-fulfilling prophecies.
My work day now ,when the business is solely self-indulgence, begins after 10 AM for an hour or two of order fulfillment and bill paying. Some time after 1 PM some listing activity to be followed by a nap sometime in the 3 - 6PM period. Evenings spent together with my wife.
Some fulfillment activity after 10 PM and out comes the kindle for recreational reading.
“There’s always fence needs mending.”
~my PawPaw–award-winning dairy farmer, horse breeder/trainer, and real estate tycoon (locally)–on why there’s no day off on farms
(Though really, it was all the animals needing feeding, twice a day, every.single.day)