Well in my early work experience everyone had to work from 2300 to 0700 until other positions up on other shifts. I was taught by the more experienced staff how to adjust my sleep patterns and continued for my 40+ years of employment.
I still use the same pattern to maintain stasis. What was discovered sometime ago before the sleep treatment units is that humans require two REM periods during their eight hours of sleep. It doesn't have to be done all in eight hours so I have split mine while working and running a business both full time. I am up long before sunrise/birds since that is my "lunch time". Then back to the first REM at 0900 and up by 1100, then back to bed at 1800 when working to be up at 2200. I have napped and not napped at work and got by fine with both--I awoke automatically after 1/2 hour so never had to be aroused if I did nap.
You are so right about the advent of synthetic sugar substitutes because they affect one's natural dopamine affected cycles which have an effect on your sleep cycles by not allowing one to have the deeper sleep cycles. Its like ephedrine and amphetamine use which causes flushed cranial dopamine syndrome which gives the user a "speed" affect. The pituitary gland deals more with arousal states in the sleep cycle and keeps one from going comatose.
I still use the same pattern to maintain stasis. What was discovered sometime ago before the sleep treatment units is that humans require two REM periods during their eight hours of sleep. It doesn't have to be done all in eight hours so I have split mine while working and running a business both full time. I am up long before sunrise/birds since that is my "lunch time". Then back to the first REM at 0900 and up by 1100, then back to bed at 1800 when working to be up at 2200. I have napped and not napped at work and got by fine with both--I awoke automatically after 1/2 hour so never had to be aroused if I did nap.
You are so right about the advent of synthetic sugar substitutes because they affect one's natural dopamine affected cycles which have an effect on your sleep cycles by not allowing one to have the deeper sleep cycles. Its like ephedrine and amphetamine use which causes flushed cranial dopamine syndrome which gives the user a "speed" affect. The pituitary gland deals more with arousal states in the sleep cycle and keeps one from going comatose.