When you've gone home with a Waffle House waitress at 0700 YOU WILL realize night freight is BAD ---->BAD<---- on the body.

Judgment tends slack off in the morning light, however, performance tends to remain solid but somewhat mis guided at times. (dont ask)

I do wish I was back in the daylight flying pax though.


Seriously there was a study done few years back about shift work. I just tried doing a net search and couldn't find the precise one I was looking for. There were several long term effects especially for workers which rotated their schedules between day and night. OSHA even made some rulings based on it.