Regardless, it’s dumb.
I’ve always thought working smarter beats working harder (or more often) any day of the week. And, as the article said:
In the early 1900s, Ford Motor ran dozens of tests to discover the optimum work hours for worker productivity. They discovered that the “sweet spot” is 40 hours a week–and that, while adding another 20 hours provides a minor increase in productivity, that increase only lasts for three to four weeks, and then turns negative.
Burnout is not a badge of honor.