Originally Posted by
rickair7777
Lack of sleep may or may not have the same biological impact as circadian disruption.
A WB guy might get plenty of sleep on his numerous days off, and sleep like a baby after he gets to the hotel. This is why we need pilot-specific data. An executive who works 80 hours/week and sleeps four hours each night probably isn't quite the same.
They pretty much go hand in hand. Most people on night shift disrupting their cyrcadian rhythm aren't getting full 8 hours of uninterrupted sleep. Your sleep quality is pretty low so you end up getting the negative effects of both cyrcadian disruption and sleep deprivation. "Why we sleep" is a pretty good book on sleep written for layman. The author has been on a few podcasts and I'd say it's worth a listen.