6 ms·

"Spending 25% more time sleeping increases your life expectancy by 25%." Awesome.

wargaarbl 11y ago
But that extra time spent sleeping is time spent not being awake to do things. So the overall number of useful hours is the same either way?
- melling 11y ago
  Depends. Are you spending that extra time commuting to work? Maybe putting in extra hours at work?
- EliRivers 11y ago
  But you're in better physical and mental shape to use those hours, so you use them more efficiently :)
- leni536 11y ago
  Let's assume you spend 30% of your time sleeping (7.2 hours a day), and your expected lifetime to be T. Then your "useful time" is 0.7T. So you decide to sleep 25% more (9 hours), so you sleep through 37,5% of a day and your life expectancy is now T'=1.25T, so your useful time is 0.625T'=0.625 x 1.25T=0.781T. Your useful time grown around 12%. Note that if you take your working hours into account and you are only interested in your free time after work, then this free time will hoard up more at the end of your life when you will be retired but you will lose free time before that.
  - nsgi 11y ago
    But on the other hand, getting less sleep gives you more time when you're young.
    - TheBeardKing 11y ago
      And since your future self is like a totally different person, fuck that guy.
      - vasilipupkin 11y ago
        oh, the naivete of the young !
- jk4930 11y ago
  The longer you live, the better become available treatments in the meantime to make your life even longer. ;)
  - switch007 11y ago
    The longer you live in the UK, the greater the chance the NHS will be gone and you won't be able to afford treatment. :-) Coming soon: https://www.opendemocracy.net/ournhs/richard-grimes/government-moves-to-consider-nhs-user-charges https://www.opendemocracy.net/ournhs/richard-grimes/governme...
- johnchristopher 11y ago
  > So the overall number of useful hours is the same either way? Yes but no because your `useful' hours will feel much better.
- nicboobees 11y ago
  Also if you sleep well, and live 25% longer, that 25% will be when you're old, senile, and unable to do anything useful. Studies about sleep are often just crazy. When did people stop using their common sense? Just have as much sleep as you think works for you.
  - artmageddon 11y ago
    > Also if you sleep well, and live 25% longer, that 25% will be when you're old, senile, and unable to do anything useful. That's assuming you do become senile and unable to do anything useful. Doesn't necessarily have to happen, and that doesn't mean you shouldn't live a good life. > Studies about sleep are often just crazy. When did people stop using their common sense? Just have as much sleep as you think works for you. What's considered "common sense" can vary greatly from person to person, and people aren't always aware of how their habits can have long-term negative consequences on them.
    - nicboobees 11y ago
      Habits like reading every scientific paper and worrying about them?
      - artmageddon 11y ago
        No, habits like only getting ~4hrs sleep or oversleeping regularly.
  - perfTerm 11y ago
    Has every old person you've ever met been old, senile, and unable to do anything useful? My Grandma walked to the supermarket the morning of the night she passed and was totally lucid for the entirety of her years.
    - tedks 11y ago
      I'm sorry to hear that your grandmother passed. How did her startup take the loss?
- speakeron 11y ago
  > So the overall number of useful hours is the same either way? No, because dreaming is useful and fun. Even more so if you can cultivate lucid dreaming.
- Amezarak 11y ago
  > But that extra time spent sleeping is time spent not being awake to do things. So the overall number of useful hours is the same either way? Am I the only person that likes sleeping and dreaming? If I were to suddenly find sleep impossible and unnecessary, I would consider that a reduction in my quality of life.
musha68k 11y ago
"Why a long night's sleep may be bad for you" http://www.bbc.com/news/magazine-31928434 http://www.bbc.com/news/magazine-31928434 "Lies, Damned Lies, and Medical Science" http://www.theatlantic.com/magazine/archive/2010/11/lies-damned-lies-and-medical-science/308269/?single_page=true http://www.theatlantic.com/magazine/archive/2010/11/lies-dam...
- anon4 11y ago
  If the baseline for the parent quote is 6 hours, 6 hours plus 25% is 7 hours 30 minutes, which is about the ideal amount in the study you linked. So yeah.
lmm 11y ago
Spending 25% more time sleeping != Spending 25% more of your life sleeping.
- deleted 11y ago
  [deleted]

But that extra time spent sleeping is time spent not being awake to do things. So the overall number of useful hours is the same either way?

melling 11y ago
Depends. Are you spending that extra time commuting to work? Maybe putting in extra hours at work?
EliRivers 11y ago
But you're in better physical and mental shape to use those hours, so you use them more efficiently :)
leni536 11y ago
Let's assume you spend 30% of your time sleeping (7.2 hours a day), and your expected lifetime to be T. Then your "useful time" is 0.7T. So you decide to sleep 25% more (9 hours), so you sleep through 37,5% of a day and your life expectancy is now T'=1.25T, so your useful time is 0.625T'=0.625 x 1.25T=0.781T. Your useful time grown around 12%. Note that if you take your working hours into account and you are only interested in your free time after work, then this free time will hoard up more at the end of your life when you will be retired but you will lose free time before that.
- nsgi 11y ago
  But on the other hand, getting less sleep gives you more time when you're young.
  - TheBeardKing 11y ago
    And since your future self is like a totally different person, fuck that guy.
    - vasilipupkin 11y ago
      oh, the naivete of the young !
jk4930 11y ago
The longer you live, the better become available treatments in the meantime to make your life even longer. ;)
- switch007 11y ago
  The longer you live in the UK, the greater the chance the NHS will be gone and you won't be able to afford treatment. :-) Coming soon: https://www.opendemocracy.net/ournhs/richard-grimes/government-moves-to-consider-nhs-user-charges https://www.opendemocracy.net/ournhs/richard-grimes/governme...
johnchristopher 11y ago
> So the overall number of useful hours is the same either way? Yes but no because your `useful' hours will feel much better.
nicboobees 11y ago
Also if you sleep well, and live 25% longer, that 25% will be when you're old, senile, and unable to do anything useful. Studies about sleep are often just crazy. When did people stop using their common sense? Just have as much sleep as you think works for you.
- artmageddon 11y ago
  > Also if you sleep well, and live 25% longer, that 25% will be when you're old, senile, and unable to do anything useful. That's assuming you do become senile and unable to do anything useful. Doesn't necessarily have to happen, and that doesn't mean you shouldn't live a good life. > Studies about sleep are often just crazy. When did people stop using their common sense? Just have as much sleep as you think works for you. What's considered "common sense" can vary greatly from person to person, and people aren't always aware of how their habits can have long-term negative consequences on them.
  - nicboobees 11y ago
    Habits like reading every scientific paper and worrying about them?
    - artmageddon 11y ago
      No, habits like only getting ~4hrs sleep or oversleeping regularly.
- perfTerm 11y ago
  Has every old person you've ever met been old, senile, and unable to do anything useful? My Grandma walked to the supermarket the morning of the night she passed and was totally lucid for the entirety of her years.
  - tedks 11y ago
    I'm sorry to hear that your grandmother passed. How did her startup take the loss?
speakeron 11y ago
> So the overall number of useful hours is the same either way? No, because dreaming is useful and fun. Even more so if you can cultivate lucid dreaming.
Amezarak 11y ago
> But that extra time spent sleeping is time spent not being awake to do things. So the overall number of useful hours is the same either way? Am I the only person that likes sleeping and dreaming? If I were to suddenly find sleep impossible and unnecessary, I would consider that a reduction in my quality of life.

musha68k 11y ago

"Why a long night's sleep may be bad for you" http://www.bbc.com/news/magazine-31928434 http://www.bbc.com/news/magazine-31928434 "Lies, Damned Lies, and Medical Science" http://www.theatlantic.com/magazine/archive/2010/11/lies-damned-lies-and-medical-science/308269/?single_page=true http://www.theatlantic.com/magazine/archive/2010/11/lies-dam...

anon4 11y ago
If the baseline for the parent quote is 6 hours, 6 hours plus 25% is 7 hours 30 minutes, which is about the ideal amount in the study you linked. So yeah.

lmm 11y ago

Spending 25% more time sleeping != Spending 25% more of your life sleeping.

deleted 11y ago
[deleted]