How does one determine how much sleep is needed

I don't get as much as I need, that's life. I know I've slept enough when I wake up rested, it happens once in a while. As a student I had a friend who always woke up at the same time without an alarm. I'd love to be able to do that.

My body decides. If I´m sleepy, I close my eyes.

I have trouble sleeping at night, I know I am not getting the sleep I need but can't help it. My body is just used to it I guess lol it don't matter what time I sleep I still wake up around the same time almost every morning.

If you are not tired when you get up than you had enough sleep.

I do not think that I have enough sleep. I wake up often during the night, interrupted sleep is not good sleep. This kitten is lovely.

Yes I do get enough sleep at night which is around eight hours daily.

You know you have had enough sleep when you go to bed when you are tired and can sleep in until you wake spontaneously. Most of us do not have that luxury.

Expectrs will give you a range to aim for. They might also give tips for a good night's sleep. However, you have to do what works for you. For example, I should sleep eight to ten hours a night for my age group. However, I find that I can do just as good with five to six. I too am a night owl, and I do quite well. I go to bed when I feel tired enough, Wake up when I'm ready.

I'm a night owl too, I need to get very tired during the day and practice a relaxation routine to sleep early. Now I've been trying to force myself to get up early but I really need to work on what I said. Then I think one has to figure out by trying how many hours of sleep makes them feel best. I know I need 7 or 8 because I feel miserable if I sleep less or more than that. Some people need less, cats and children usually need more. Some have naps in the afternoon and that also counts towards the total.

I think our bodies have an inner clock that times our sleep. If one night I don't sleep well the next day my body tells me to take a nap,

Been a Night Owl all my life. Even when I had to be at work at 7:30, I was up till midnight or later...In my party days I was out to 3am and at work by 7:30. But now in my retired days, I only get up before 9am if I have an 11am appt. And I am lucky if I get to sleep by 3am. I get to watching videos..the shorts on youtube, or reels on FB. They are addictive. LOL Even if I only get 4 to5 hours of sleep, I am up late the next night. But...sooner or later I have one of those days where I sleep till 10 or 11am...guess you could call it Binge Sleeping. LOL

an early bird. up to 8 hours