I used to be able to sleep 5 hours and get to bed around 2-3AM many days in a row.
I've just hit 30 a few months ago; in the past year or so I noticed that now I really need 8 hours of sleep and have to go to bed around 10:30-11PM. If I go a few days with less than 7 hours of sleep, my brain starts being quite lousy at managing my focus and emotions. And for a reason or another if I get 8 hours of sleep, but went to bed at 2AM, it feels like I got 5-6 hours of sleep when I wake-up.
I've just hit 30 a few months ago; in the past year or so I noticed that now I really need 8 hours of sleep and have to go to bed around 10:30-11PM. If I go a few days with less than 7 hours of sleep, my brain starts being quite lousy at managing my focus and emotions. And for a reason or another if I get 8 hours of sleep, but went to bed at 2AM, it feels like I got 5-6 hours of sleep when I wake-up.