I have noticed this myself - I'm unemployed and frequently go to job interviews. If I slept badly, I'm much more calm and easy going. I may not be the sharpest

I have noticed this myself - I'm unemployed and frequently go to job interviews. If I slept badly, I'm much more calm and easy going. I may not be the sharpest knife in the shed when it happens, but I no longer care. But I avoid sleep deprivation. It can't be good in the long run.