I work some difficult shifts. And have a young family.
There are times I've gone 60+ hours with less than 6 hours of sleep.
It's not enjoyable or healthy. But I can function. And pretty well.
Ideally, I like 8 hours. And when the time is available I can usually lay down and sleep 8 hours. It feels wonderful.
Then there's days I'm living on twenty minute naps
-Jake
I work swing shifts and am in the same boat. Getting a CPAP machine was a game changer for me. I try to get 8 hours, but if I only get 4 I still feel rested.
