How many hours of sleep can you go without and for how many consecutive days?
970101
I think answer number 1 is correct. However, it probably depends on the individual. Some people wouldn't last more than 24 to 36 hours.
896109
There will be times in your life when you will need 12 hours and it's no big thing.  Your body tells you when you need sleep, and if it's at all possible (like not at work or driving, etc.) then listen to your body.  When you sleep your body rebuilds itself.  Just don't over-do it night after night with that much sleep.  Normal needed is about 8 hours a night.  But you can play catch-up sometimes.
12129
Eight to ten hours is best, although even a solid eight is better than less. Kids really shouldn't cut their sleep too short until they age a bit more; normally around 14-15. Even then, six to eight is what to shoot for. It just gets harder, the further you move into the teenage years, to find the time for enough sleep.
133078
if you are normally active you need 5-7 hour total sleep during a 24 hour period. limit your naps to 20 minutes or you will feel sleepy the rest of your day or night. if you are not active you could probably stay in bed all day and night. get some fresh air and some sunlight
307633
Most people recommend at least 7 1/2  to 8 hours.  It depends also how old you are, sometimes older people get by with less sleep.  Look at it this way, if you get a certain amount of sleep then wake up, and you still feel like crap, you need more sleep.  Most important too is if you wake up in the middle of the night, DON'T look at the clock, it will psyche you out and you won't fall back asleep as fast.  Also try to go to to bed and wake up at the same time every day, or at least don't vary the sleep/wake up times by more than 2 hours (for example if you normally get up at 7am, don't sleep in longer than 9am, regardless of the time you went to bed), that's the maximum difference your body can take. Also don't drink ANYTHING closer than 3 hours before you hit the sack.
338793
To get more energy. If you don't you will get in Sleep debt. Also your brain, reflexes, and body would not do as good. When you are in sleep debt you have to sleep more to get back on track. Also the recommended hours of sleep are 8 to 9 hours.\n\nFor kids they need 10 to 11 hours of sleep.\nAlso Dr. Know (from TV) did tests on a lab rat (Not a rat but a human) by forcing them to only get 4 hours of sleep each night and did a test a found out their reflexes were slowing, their memory test wasn't as good, and when they recovered (pay their sleep debt) they did better.
1026794
I went 4 days without eating or drinking when my Fiance went back to Iraq, I was so scared something would happen to him and I missed him so much that I did nothing but cry. Longest without sleep was probably a day and a half.
1076025
Normally Seven to Eight Hours r quite enough for a healthy person\nbut if u want to sleep u should/must sleep n try to relax ur self as much as u can\nIf u'll be relax u can work n do things with concentration n easily without tiredness
6836
Your question doesn't have a clear answer, unfortunately....and for a couple of reasons.  The longest anyone has ever lived without sleeping at all is about a week and a half to two weeks.  Sleeping being the main vehicle of the body's rebuilding and revitalizing processes, without it, there is no way for the body to recover from fatigue and damage.  \n\nThe body can survive on very little sleep, however there are side affects if this isn't done cautiously.  Hallucinations, confusion, disturbed bodily processes, and a very highly suspeptible rate for sickness follow those who dare to "cheat" sleep with the body.  Even with drug abusers where they claim to have not slept in weeks, the truth is that the body shuts down at certain points during their "drug induced conscious time periods" and the drug abuser probably didn't even realize it.  Sleep is so important that without certain measures taken, the body will, at some point, simply shut down and sleep out of pure necessity for survival.  The body is known for having a sense for survival that is sub-conscious to most people.  \n\nAll this is a bit misleading though.  One function of meditation is to take the body into a waking sleep, where the heart rate slows and the body recovers, just like it does in deep sleep.  The body can live much, much longer in this state and it has been proven to be a health promoting practice.  It is rumored that people have survived extremely long periods of time without ill affects by using certain meditation techniques in place of sleep.  But this is obviously not a normal practice and has not been made a place in modern science yet.\n\nSo the answer is a bit more than what you probably expected, but it should be more clear now.
298325
sleep DOES effect your daily life. you need at least 7-8 hours of sleep a night to be fully rested. a bad nights sleep, or no sleep, can put off your whole day. go long enough without sleep, and your brain will shut down and sleep, whenever it wants to.\n\ni go to sleep about 11pm and get up anywhere between 7am and 9am.
672480
WebMD's article on sleep, which was reviewed by the Sleep Medicine Center at the Cleveland Clinic, and cites the National Institutes of Health and the National Sleep Foundation as their sources, state that:\n\n"The amount of sleep a person needs depends on the individual. The need for sleep depends on various factors, one of which is age. Infants usually require about 16-18 hours of sleep per day, while teenagers need about 9 hours per day on average. Most adults need about 7-8 hours of sleep per day.\n\nThe amount of sleep a person needs also increases if he or she has been deprived of sleep. People do not seem to adapt to getting less sleep than they need. "\n\n\nSweet dreams :)
1137755
I went almost a week with only a couple 30 minute naps.  It depends on who you are and how much energy inducing stuff you drink normally.
556867
That will depend entirely on what your thesis research involves.  If you are limited by library hours, or laboratory hours and experimental growth delays, it makes a big difference.\n\nIf you've got enough caffeine and enough limited access to your facilities it is possible to remain awake for 5 to 6 days without sleep, but I don't recommend it.
329421
That is enough sleep for adults.  Children need more, 8-10 hours.  When adults sleep more than 8 hours it is actually bad for their bodies.
771698
If there is 24 hours a day, I have to sleep 8 hours, so there will be 16 hours left. From 16 hours, I'll spend 8 hours studying, 4 hours watching television, 2 hours having fun and with the 2 hours, u can do what ever u want.
1088076
8 hours is recommended, but it really depends on each person. Some people can function properly with 5-6 hours and some can not. You should try sleeping less than 8 hours and see how much sleep you need.
260966
Randy Gardner holds the Guinness world record for the longest period of time a human being has gone without sleep. In 1964, as a 17-year-old high school student, Gardner stayed awake for 264 hours (11 days) with the help of friends, TV reporters, and games of pinball. On his final day without sleep, Gardner presided over a press conference where he spoke without slurring or stumbling his words and in general appeared to be in excellent health. "I wanted to prove that bad things didn't happen if you went without sleep," said Gardner. "I thought, 'I can break that (Peter Tripp's 1959 record) and I don't think it would be a negative experience.'" Sleep experts now believe that such sleep deprivation stunts are dangerous.