how many hours of sleep do you need?

[KiwiMeowo]

My ideal sleep time is from 12am to 9am, so I guess 9 hours. For some reason, I tend to feel very sleepy if I wake up before 9am, even if I have slept for 8+ hours.

A bad habit I need to change is procrastinating sleep, it would be 10pm, and I would think "Hm I still have enough time to do other stuff (Like homework, hobbies etc), then I blinked and it would be past 12am. I am worried staying past midnight would be a slippery slope that I would sleep later and later, so I'm trying to fix that habit.

[ValyceNegative]

My usual sleep times are from 11 PM to 7 AM, so 7 or 8 hours of sleep. I am most active in the mornings and I like to wake up early to have most of my work done during those hours so I can chill in the afternoon. Sometimes I like to shift one hour and do 10PM-6AM, especially in the summer when the sun rises very early, and enjoy the silent house when everyone else is still asleep and I can get ready for the day, then draw or write in peace. UwU