Usually 10 to 4:30. If I get to bed at 9:30, I'm pretty excited. So there we are back at 10 to 4:30.

5-9 hrs. Depends on the day/ night. It's not ideal. And I take naps if I can.

I have run on as little as 4-5 but 7-8 seems to be my sweet spot (11pm-6:30am or so). My problem is that I'm not a deep sleeper unless I'm really tired so I tend to wake up a lot, esp. if I'm stressed or it's a stormy night or something.

Mendalla

I'm all over the place.  Early-mid 20s 5-6 hours plus one night a week of 7-8 hours is what I needed.  I've had periods where I could have slept for 14 hours consistently.

More recently, I seem to go periods where I can't sleep well at all, it doesn't matter if I force myself to stay up during the day or not.  That's followed by periods where I can take 3 hour naps and still get 8-10 hours at night.

Mendalla, it may be an IT thing...you have to be able to run on empty for periods of time.  I like to get 7hrs, I can survive on 5-6, with catchups on the weekend.   I sleep very well since I lost weight, before that my sleep was of poor quality.

I get seven usually.

I usally average 6 with more on the weekends. I can function but be tired on 4-5 as long as I can sleep in on weekends. I've done 3 more than once trying to finish school assignments, wouldn't want to do that again.

One of those "awake most of the night" nights . . . up since 3 a.m.!  I hate it when that happens.  By late this afternoon I will be dozing in my chair.

Me too, beloved. Sometimes I sleep in shifts. A couple of hours, up for two hours, back to bed for 3 hours. I have taken to 10 minute power naps on my breaks. I didn't used to be able to do that- it would take me at least that long to fall asleep- but they help. My problem is often stress, often just finding a comfortable position if I am having tight muscles, muscle spasms- OR lol! If my dear husband hogs the covers, snores, or crowds me over to the edge of the bed. He's a very deep sleeper! I don't think when he's rolling over he has any idea that I'm there. I'm used to it.

7 hours usually, 8 on weekends.  But my guy struggles to get/stay asleep so sometimes that affects my ability to be fully rested too.

11 hours is just unrealistic.  You couldn't convince me to sleep away that much of my life - especially in this beautiful summery weather we're finally getting!

I find I exist best on a consistent 8-8.5 hours per weeknight, maybe an hour more on weekends. Which makes me on the high end of the posters here, but no 11 hours. I come from a family of people whose mental health issues were/are extremely exacerbated by insufficient sleep, so proactively I've developed pretty good 'sleep hygiene' (no light, no late night snacking or exercise, consistent bedtime/wake hours).

I try for 7 to 8 hours a night, sometimes 9.  However Parkinsons Disease interfers with sleep patterns.  I usually have no trouble getting to sleep but often wake very early, and have trouble getting back to sleep.  So, on a good night I hope for at least six hours of unbroken sleep - say 11 to 5, then try to doze for another hour. But sometimes it is as early as 1:30 or 2:00 that I wake up and have only a few short periods of sleep from then until morning.  Sometimes I just stare at the ceiling.  Sometimes I put the light on and read - but my rule for myself is don't get up or use the computer before six am.  

On the other hand, I sometimes fall asleep during the day - even if fairly noisy or busy places if I am sitting and not engaged in doing something.  Sitting, listening to a presentation,lecture or sermon, watching TV or a play or dance, passenger in a car, listening to conversation going on around me.  

Falling asleep during the day has nothing to do with whether or not I got enough sleep the night before.  Well rested, sit down to read the paper and fall asleep.   Have a nap in the evening and go to bed for a good night's sleep.  If anything, being relaxed and rested when I go to bed means a pretty good night's sleep.  Overtired means a restless night coming.

Last night on CBC "The Nature of Things" screened an excellent show on light at night and how that's affecting our sleep patterns, mellatonin production, general health, ability to resist cancer cell growth ... it was quite eye opening!  Some fascinating researchers talking about what in their work led them to consider the effects of light on health.  Not sure if the episode can be accessed online, but I imagine so.  Well worth a look. 

Interesting, I had read a bit about the lack of deep sleep due to light in your sleeping area.  (the challenge of tv's on, or street lights).

I hadn't heard of more findings, thanks Carolla

Here's a link to that  episode ... interesting & worrisome ...

http://www.cbc.ca/natureofthings/episodes/lights-out

Thank you all for your answers. Eleven hours per night seems pretty unrealistic.

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A few times for school I have pulled all-nighters.

I usually felt like crap the next day. Back when I was in college for radio we would sometimes sleep on the icy - cold floor of the production studio - or else on the couches in the radio lounge - under glaring florescent lights.

I only pulled one all-nighter while doing my bachelors degree - and it was to finish writing my directed research project and presentation - both of which I had to present the following day. I gave myself a 1/2 hour sleeping break after each 2 hour studying block. That went reasonably well. I aced my presentation - and got a B on my paper.

Last night, I crashed by 9CT, but was wide awake at 5am CT.  I actually woke up at 3am, thought "i think i could use another hour", woke up at 4am, did the same, and got up at 5am.

Bascially, my body wakes up generally after 6hrs, but, I will take more sometimes.