1 Million People Agree – Sleeping for 5 Hours is Better Than 8


By: Dave Asprey

1 Million People Agree – Sleeping for 5 Hours is Better Than 8



You’ve heard it before: “Everyone needs 8 hours sleep per night.”

Well, a study out of UCSD paints a different story. The 2010 paper instead suggests that the secret to a long life lies in getting just enough sleep, which ends up being about 6.5 hours per night.[1]

The study looks at 1.1 million people’s sleep patterns over the course of 6 years, tracking the amount of sleep each subject averaged alongside their longevity. Two major findings were:

  1.    Sleeping as little as 5 hours per night can be better for you than sleeping 8.
  2.    Insomnia is better for you, long-term health-wise than taking sleeping pills.

How much sleep do you really need?

The study, run by Dr. Daniel F. Kripke an MD and Professor of Psychiatry specializing in sleep research and aging, didn’t find any statistical health-related reason to sleep longer than 6.5 hours per night.

Data that he used from the Cancer Prevention Study II (CPSII) from the American Cancer Society even shows that sleeping about 5 hours per night is slightly safer than sleeping 8. In this case, we’ll go ahead and define “safer” as “not dying.”

The data is impressive. It covers 1.1 million participants, and it is the first large-scale population study that correlates sleep with longevity while taking into account things like age, diet, exercise, health problems and smoking.

The data is from 1982-1988 because it took years to input the data and perform analysis on it.

I’m not sure where the sleep-8-hours-per-night myth came from, but it’s totally wrong. You can file it away under old information, along with the eat-fewer-calories-to-lose-weight myth.

And if you thought those pharmaceutical sleeping pills were helping – time to reconsider. The study also found that sleeping pills correlated with dying earlier, but insomnia did not. That means you’re better off suffering through some sleepless nights rather than popping pills.

[ Article Taken from bulletproof by Dave Asprey ]


 [ Dangers and side effect of oversleeping ]

Too much sleep can negatively impact the life span and quality of living. Studies show that sleeping over 8 hours a day in adults has been consistently linked to heightened mortality rates, although other associated factors are not ruled out.

A University of California, San Diego study of psychiatry that analyzed over one million adults, found that those who live the longest indicated sleeping for 6 to 7 hours each night. Another sleep study of duration and mortality risk in women showed similar results.

It has been suggested that the correlation between lower sleep hours and reduced morbidity only occurs with those who wake up naturally, rather than those using an alarm.

Excessive sleeping has been associated with the following

  • Increased fatigue and necessity of napping
  • Increased risk of diabetes
  • Obesity caused by gradual weight gain
  • Headaches
  • Immune system dysfunctions
  • Coronary heart disease
  • Depression
  • Memory problems
  • Hormonal imbalances resulting in an array of conditions developing over time. Oversleeping brings the vital levels of hormones such as estrogen way below the levels required for normal physical and cognitive functions.
  • Lowered vitality and drive to do things
  • Doubling of the risk of death primarily from causes other than cardiovascular disease

      [ Taken from Too much of ] site  It’s a great site .


I have struggled with this bad habit my whole life , even right now I still fight sleeping in , because it’s so pleasurable and is like an escape from this stress filled world  .

You always here about not getting enough sleep , but you never ever hear about sleeping “too much”.

No one needs more than 5 to 6 hrs of sleep a night , do the experiment. Every time  I go to bed by 11 : pm  and get up by 5:00 or at least 5:30  is when I feel the best by far .

You do not want to get less than 5hrs that is too little .

You do not want to get up before 4 am that is too early . Studies show the deepest part of the sleep cycle is 3am .

You can go to bed too early , no sooner than 10 pm , no later than 11pm . Which reminds me of a Hollywood actor who goes to bed at like 7pm and rises at like 2: 30 am which is all wrong . What is fascinating  was seeing him in an interview by a well known comedian that he worked with in a movie . Someone posted a comment how he seemed drunk , which I also observed . Then I started to realize it’s because he gets up in the middle or deepest part of the sleep cycle which throws of your body’s sleep cycle [ circadian ]  .

The supposed understanding that everyone is different is utter complete nonsense , that some people are late riser’s or night owls , holds no water . It’s called a lack of discipline , and the comfort zone . 

The more I sleep in past say 5: 30 am  I feel lousy [ sluggish] .  Do the experiment  see for yourself .

I remember my dad saying he never felt better when he was in the service and they made him go to bed at like 10pm and get up at 4 am .

 I’m sick and tired of hearing the “I need 8 , 9, 10 hrs of sleep” People who say they need lots of sleep 8, 9, 10 hrs say it because [ They love sleep] ,   Why ? because it’s so pleasurable  Pr 20 : 13 ,  Pr 6 : 9 , 10 [ Niv] bible . I’m laughing so hard !!!

There are” exceptions” to the above points.. If you’ve had a  traumatic experience  like divorce,  death [ family] , surgery, etc, you definitely need more sleep . Also , if you’ve incurred a head injury you definitely need more sleep immediately after . But in general , anywhere from 5 to 6 hrs is the true range .

( Look this is a perfect analogy or whatever .  You can overcharge a battery much the same with the body  [ sleeping” too “much ) .

  Sleep is very powerful . Think about this,  there have been times when I was going great balls of fire at work , lots of energy , then at lunch time I would take like a 5 min nap and when I woke up and started to work , I felt terrible , the nap ruined my energy level . It made me think how powerful sleep is.  Even over – sleeping like 5 min can greatly affect you in a negative way .

Another thought,  habitually sleeping too much can 1] Contribute to depression  2] Depresses the immune system  .  3] Slows the elimination system [ bowel movements ] .

 Also , sleeping in or late , will make you soft [ musculoskeletal system] for that day.

Oh,  and by the way , in the shall we say religious field the understanding is that God thru Christ [ made all things] which would mean your body , and he as a habit rose pretty early .  Mk 1 : 35 .

Other verses about sleeping too much  Pr 6 : 6- 11 ,  Pr 10 : 5 ,  Pr 19 : 15 ,  Pr 20 : 13 ,  Pr 24 : 30 – 34  [Niv] bible .

Think about this ,  do you really think God who made us in his image designed us to stay in bed , sleep in , waste the day away ?  No , he designed us to get up early and go , live life , not stay in bed sleeping .

Bottom line , as with too much of anything , like alcohol , you can be drunk with sleep !!!