In my late teens I worked in a office at a different shift each week.
they though it was fair,
I could have sworn is was most UNATURAL and completely insane!
I left after three months of that..
We werent blessed with an internal clock to learn how to abuse that gift.
The natural progression of daylight.and darkness....worked well for thousands of years.
When I was in the Air Force, I worked a different shift every day. I somehow managed to survive 20 years of it. Then I worked for Ca Dept of Corrections. Back to shift work all over again. I managed to survive 25 years of that too.