> For me, if I actually skip 2 nights sleep (e.g. travelling) I'm barely able to speak in coherent sentences or make decisions, my vision blurs, I feel derealiz

> For me, if I actually skip 2 nights sleep (e.g. travelling) I'm barely able to speak in coherent sentences or make decisions, my vision blurs, I feel derealization etc. Then do an all-day on-site technical job interview.