Both. In my case for example, I have a condition called delayed sleep phase syndrome, which causes me, on average, to not even feel tired until well after midnight, and actual sleep will alude me until after 3am. This is regardless of what time I wake up btw, I could fall asleep at 3am and wake up at 5am or 2pm and I’d still be wide awake after midnight the following night.
On the other hand, I know quite a few people who can adapt their sleep schedules fairly quickly to switch from a morning person to a night owl or vice versa.
Both. In my case for example, I have a condition called delayed sleep phase syndrome, which causes me, on average, to not even feel tired until well after midnight, and actual sleep will alude me until after 3am. This is regardless of what time I wake up btw, I could fall asleep at 3am and wake up at 5am or 2pm and I’d still be wide awake after midnight the following night.
On the other hand, I know quite a few people who can adapt their sleep schedules fairly quickly to switch from a morning person to a night owl or vice versa.
Interesting, i think my question popped up because i never really felt the effect of my environment on my circadian cycle.
So i wasn’t to much aware that people feel tired or the need to wake up at specific times of the day. I’m someone that can adapt like you said.
For me the only thing that i felt had an impact was if a specific hour is a habit. Then you feel way better sticking to it.
(That and of course the amount of sleep)