Sleep Definition and 159 Threads

Does anyone know studies which link intelligence to a) sleep (duration) b) immune system (weak/strong) c) inheritance (how much inherited, from father/mother?) I vaguely remember hearing some results to each of these topics.

Our family dog has bad cancer and is to be put to sleep today, we had him as rescue dog 10 years ago, he is now 16 years old, he has all ways been a loyal and friendly dog we shall miss him.

Take this case: A person sleeps for four or so hours and there's another person who lies down for four hours but he cannot sleep, yet he rests. What's the real difference? The person who has slept feels fresh after getiing up which the other person feels heavy and fatigued. Why? Should we...

From time to time we read about people who sleep three or four hours per day day. E.g. Thatcher, Churchill, Arafat, Edison etc. all slept just a few hours per day (about four hours if I remember correctly)...

I've been revising for my exams throughout the whole last days. What I've been doing is studying in the evening and sleeping (at least 8 hours, which is good enough, I think) during the day, because there's more silence around. Anyway... since two days ago I can't get no proper sleep and I...

Some times i sleep best when or if i fall asleep upright in my chair, but that i think is not good sleep, i think the media says one needs rem sleep, so how do your sleep patterns make you feel good?

On all those studies which took people and placed them in caves/prolonged darkness, it's known the body goes into a 25 hour "day/night cycle". But is that cycle itself roughly synced with the actual day and night (even when the person can't tell whether it's day or night outside), and if so, how...

Radiation from mobile phones delays and reduces sleep, and causes headaches and confusion, according to a new study. http://news.independent.co.uk/sci_tech/article3353768.ece Can this be trusted?

how to survive on 2 hours of sleep a day! Wow! I just finished reading this short article in WIRED magazine that explained how one can survive on just 2 hours of sleep every night. The article said that in order for this to work you must take a 20 minute nap every four hours. The article also...

http://sev.prnewswire.com/publishing-information-services/20080111/DC1129510012008-1.html I know we all love PETA here.

How many hours of sleep do you usually get a night during semester/holidays/summer? I believe it was Benjamin Franklin who was able to manipulate REM(Rapid Eye Movement Sleep) and function off of 2 HOURS OF SLEEP A DAY!Thought that was pretty cool. For those of you that do not know what REM...

I haven't thought of physics since I was in college about 10 years ago (I am a biologist today). For some reason, however, last night when I was lying in bed I started thinking about general relativity. My mind settled on a question that caused me to loose several hours of sleep, and I don't...

http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve&db=PubMed&list_uids=9125693&dopt=AbstractPlus This paper is linked only to reference the question: Why do astronauts tend to sleep less while in space? It is [apparently] still an unsolved problem, and it sounded interesting.

How is one able to sleepwalk and enact a dream without even knowing it? I have already sleepwalked , sleep studied (amazing huh? i got an 'A' for that paper) and sleep eaten.My parents saw me & let the episode pass and I cannot recall even a moment.

An animal that does not need to sleep would be at a huge advantage over all other animals as animals are more vulnerable when asleep, so why are there none that have done that? (i think i am correct in saying that all animals sleep)

It is no mystery of what sleep is, but no one has been able to figure out WHY people sleep. This thread is here to ask people why they think sleep is needed. :zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz::zzz: I believe that it is because the small...

My sleep patterns are all screwed up as of late. I'm tired when I need to be awake, and restless when I want to sleep. I've been going to bed sporadically between 11 and 3. 11 is not a problem, but I hate not falling until 11 when I have work the next day. Anyone have any suggestions on how...

Yeah, I know that it's a weird question, but it's been bugging me (pardon the expression) all day. I've never actually seen one in the act. While I know that many tend to be inactive at night and during the winter, I've never heard or read anything to indicate that they're asleep rather than...

sometimes sleep gets in the way of studying for me and I'm not sure if it interferes with my long term remembering of the topic. so how about you guys? what you experienced? do you make sure to get your minimum hours of sleep or do you burn the midnight oil and not suffer for it?

Been up since 2am, now it's slightly after 5. But found some time to do some homeworks. Working on MATLAB now. Anyone staying up late? what are you doing?

Since I have an 8am class 3 days per week, I get about 6 hours on the previous nights. The other nights I average about 10 hours, so my sleeping schedule is really polar, and it's annoying. Next semester I'll be waking up every day at the same time. What about you all?

http://www.news.com.au/couriermail/story/0,23739,20880680-23109,00.html it is just too warm so they aren't getting such a good hibernation this year apparently the problem extends from Siberia all the way to Estonia. thx to Lucretia X of the sciencechat news team...

Why do we need to sleep at all? I have even heard of people that never sleep,and of people that need to sleep a very short period a day (say ~1 hour). Some mammals (cats,dogs) are also going through so called REM phase of a sleep. I'm not sure but watching him ,I think my little parrot also...

It's 4:21 right now and I've been studying and writing essays most of the night. While performing these tasks I was trying not to :zzz: . Now that I'm done with all that I needed to do, I'm no longer tired and cannot fall asleep :devil: What is worse is that there is almost nobody on PF right...

I think I know why I often have to turn two full 360 degree turns over the course of the half hour to one hour before I fall asleep. (I'm one of those furnaces who never has a problem staying warm - climbing under freezing sheets even in the deep winter, is only a problem for about 30...

How much sleep does an average person should get? I usually get 6-7 hours a day, but only with a clock alarm. I go at 12pm and wake-up at 6:40 but I used to go to sleep at 2am and wake up at 5:45. With my sleeping is like this, when I sleep more than 8 hours, then I lack any energy for doing...

Find Your Pose! http://www.evany.com/sleeptest/

I heard something from a friend today. She said she and her hushand had agreed on the possibility of "seeing other people" in the future, but still remain marry. I was sort of amused, because i could not in my wildest dream imagine such relationship with my own girlfriends. My question is this...

Okay, so I've been consolidating and typing up my notes today, most of which are on linguistics. I just thought of the lamest joke, but it's totally hilarious now because I'm so tired and utterly Chomskified. Okay, you know Robin, of Batman and Robin -- the Boy Wonder, I believe he is called...

http://www.msnbc.msn.com/id/11392879" Evidence supporting the notion that its best to sleep on big decisions.

I got 2 hours of sleep in the last 48 hours. I’m such an idiot. Now I am a walking zombie. :cry: I think I will go and buy a big coffee from star bucks now........shudder. Its weird though, I am yawning but I don’t really feel all that tired. It comes and goes. Sometimes I feel no effects of...

It looks like people can die from lack of sleep. How do they die?

How loud does brown noise have to be for it to be effective?

"Stuck" in REM sleep? Is it possible to get "stuck" in REM sleep? Meaning, since we go through different phases of sleep, could we get stuck in the REM phase and not be able to wake up because of some weird phenomenon of phenomena?

i am thinking it partioning sleep patterns, and as far as i can tell, i can get it down to 3 hours or so a day, though i don't want to take 6 naps or so a day as this will lead to decreased levels of seratonin,melanin etc. i beliave that if i take two 3 hour "naps" or rather partitioned sections...

Hi, I'm new to PF. So here goes... If i get a new game, i usually play if a lot (since it's new and all). I probably play it late. That night though, i get a lot of trouble sleeping. I keep waking up (sleep walking, or some form of that) and i'll have my hands infront of me thinking...

I can not sleep again i miss my kip :cry:

Sometimes I can swear that our pet cat is dreaming in her sleep: her jaw kind of sags, her breathing becomes sleep-like (almost audible), she has tiny jerks in her paws and arms, her whiskers tremble. During these times, she is in a deeper kind of sleep than her more frequent "cat sleep"...

Why do people go to sleep, i could stay awake forever, i don't like bed for sleeping, only for being lazy, when i go to bed i think i should do this or that, but mister lazy tells me shut up.

I really need some help.you know that seems pretty funny but sometimes when I'm about to fall into a deep sleep or when I have a deep sleep, someone suddenly call me my name by whispering and wake me up! :rolleyes: That's pretty crazy the momment I wake up I see no one around but I feel the...

My gf and I just broke up a few hours ago. I just got back from the gym. I wanted to like let it all out at the gym. I didn't workout hard or anything... I just wanted to go there. This is definitely pretty hard... very hard. So, any tips for sleeping tonight? :frown:

I have visited your forums with interest and have posted this, in the hope, that someone may be able to shed some light on the situation I find myself within. My partner, wakes at night (at least 2, sometimes 3 times), proceeds to pour out his heart with speech patterns that are not his...

hey guys...many times when I'm asleep, i grind my teeth for hours. Does anyone of you know how i can get ride of tat unconscious habit...and what causes it? I want to know all these just so that i can prevent any further episodes of teeth grinding as it disturbs my family matters during their...

I notice distinctly apparent changes in myself under sleep deprivation: cognitive skills increased, mood increased, focus is typically good and distraction is no longer a powerful nemesis. My first experiments involved a period of no sleep for approximately 5 days during which i took some...

Why do we sleep? Is it because our brain needs time to move and solve problems, and recharge energy to our organs? And is sleep sub consciencous (sp) or unconscience (sp)?

Want to hear something that will give you nightmares? this is a recording of a little child saying "Daddy, Daddy" then they play it backwards and it says "Please Daddy, Help!" nightmare

How much sleep should the body get? Is it really dependent upon the individual? Is there a minimum we should all get? I have heard the most important time is around 3 am, or 4 am because the body produces, releases melotonin (hope I'm not confusing that word with skin cancer word, because...

So here I am, It is Thurs. morning 1:30 am. I haven't slept since Mon. night, when I got 6 hrs. of sleep. I am just getting hammered with rediculous amounts of school work, I don't think I will be able to sleep at all tonight either. I'm am kind of scared for my health. Today at work I was...

Just one of those random discussions but now I'm kind of curious. Do fish actually have an unconscious state similar to what we'ld call deep sleep? So that they wouldn't react to most stimuli, excepting a sudden pulse in the water?

This was a very interesting article on sleep http://health.yahoo.com/health/centers/sleep_disorders/_101.html