Usually the average hour for human to sleep is 8 hours.
But is it possible to train to just sleep 3 - 4 hours a day without causing side-effect???

I think the amount of sleep varies along with age.... Old people tend to sleep less... or they just couldn't sleep
I would say 6-7 hours daily is the minimum amount of time for resting (for adults)... too little sleep will render the brain rather.... "restless" (tried before, very steam)
3- 4 hours would be okay as long as its not for long-term... you may need to "re-sleep" back the hours lost to be able to prevent from being too exhausted

This post has been edited by [PF] T.J.: Sep 18 2010, 01:55 PM

during my previous reverse military training, we were forced to sleep for 3-4 hours a day yet we feel as alert as ever... due to constant pushing from instructors

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Added on September 18, 2010, 2:33 pmas for my case, I think the main reason that I stay awake is because my body acknowledgethe danger if I were to feel sleepy or yawn and pump extra "uummpph"

P/S just my hunch since I`m not from bio or medic background

This post has been edited by Awakened_Angel: Sep 18 2010, 02:33 PM

Yes, it depends on age and usually old people tend to sleep a lot less.. but why old people sleeping pattern change?

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Added on September 18, 2010, 2:48 pmI've heard it's possible to train sleeping hours but don't think a person would want a constant pushing from instructor (e.g. water splash, loud noise, got beat up, etc...)
Guess your training has turn you into an alert person which is a good thing...

This post has been edited by arthurlwf: Sep 18 2010, 02:49 PM

Wah... slept so little only not tired ar haha
Perhaps its the effect of adrenaline rush or maybe its merely because you are very disciplined haha

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Added on September 18, 2010, 3:05 pmIf I'm not mistaken, researches are still undergoing in finding out the actual cause for the change of sleeping pattern... Some say its natural as human ages, whereas others say that its caused by hormonal changes Or perhaps its because of all the worrying/stress experienced by elderly people which indirectly induces insomnia...

This post has been edited by [PF] T.J.: Sep 18 2010, 03:05 PM

Oh... we sleep.. with our eye opened when briefing... this is a skill that I learned

yawn and find yourself sleeping on the drain or eat by mud of dungs

Actually they got a way to sleep every 30-1 hour and feel very alert and do that every 6-7 hours. something called "Sleep Hack" you can check it out at
sleepwarrior.com but their site is under maintanence

Yo bro, how do you sleep with the eyes opened? Very interesting and "useful" haha

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Added on September 18, 2010, 3:26 pmThanks for the heads up!
Will do some Googling

This post has been edited by [PF] T.J.: Sep 18 2010, 03:27 PM

Found an ebook
http://www.scribd.com/doc/3932344/40-Sleep...ptimizing-Sleep

I mastered this skill during my primary schooling time...

Not expert on this and thought very little bout this.

But slping is main to regenerate and fix the died tissue isn't it?
I know many ppl wan to slp lesser since we can slp eternally after life,
but the main thing is if we slp lesser, even if we can feel awake or not so slpy, it is still insufficient to provide enough recover to our body, and thus cause many bad effect.

Child would need slp more than 8, i think because they have weaker body system.
Adult 6-7, more abit would be better.
While i think elder people need more instead.

Yeah it's free to distribute, as long as the main link stays haha. Nice googling, i was too lazy

Sleeping is to detoxify and rebuild cells from what I know, children need more because they are still growing and adult may require less just to maintain and older people sleep less but need afternoon nap because engine is old and less efficient.

Yeap! Sleeping also enable tissues to rest...
"engine is old and less efficient" good description bro haha

I think it is more like they dont give you a chance to sleep not the danger. Any danger is just self imposeed. How long was your trainning? 2 weeks? ( I am navy reserve too). Forcing you to live a 30 hour day when there is only 24 hours, you will have to find back the lost hours. Taking naps during class is the most common way to get back this lost sleep.

its is possible naturally.. since we have bio clock within us..
our body and it shud be in our control...we have to train it continuously no matter wat then shud be okay

when i was a student, i sleep less than 7 hours.

When i started to work, i sleep just nice 8 hours everyday during the weekdays.

Weekend will sleep lesser.

for me, max. is 7hours...

i have tried not to sleep for 24 hours before and i find it much easy to my brain & body if i didn't see the change from daylight to night and to daylight again..

Agreed. There's a reason why we need to sleep.
I went for a 9days St. John training camp, maximum only get 3hours sleep per day. No luck on sleeping on classes coz everyday have to run around solving puzzles and collecting stamps, building bamboo towers and doing many other stuffs. Oh and if the trainers caught you dozing, then it's whole group pumping 20 times or running laps around the field. On the ninth day, I found out what it really meant by microsleep. I can talk or listened to some conversations, blackout for 1 or 2 seconds, and then continue talking without realizing I've actually stopped talking.

David blaine prroved that he can stay awake for 2 days without problem