Background: Recently I have really messed up my sleep schedule due to my procrastination. The internet points to some very basic conclusions but I would like to see actual experiments on effects of sleep on cognitive functions.


  • What is the absolute minimum hours of sleep one needs to completely restore brain functionality to peak levels?
  • How much sleep is required for muscle rebuilding processes?
  • How does this amount of sleep affect learning process, memory recall, and ability to infer relationships?
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    $\begingroup$ vote to close: aside from being self-help, this question cannot be answered adequately. 'required' amount of sleep will vary with the individual, and is certainly not a step function. also, what are 'peak levels' of brain functionality? if we broaden the criteria required for an answer, then the question is simply asking for a review of sleep studies on cognition. $\endgroup$
    – Jeff
    Nov 13, 2012 at 4:08
  • $\begingroup$ I closed this question as I think it indeed is too broad, you could narrow it down and already look up some initial resources. You mention 'the internet points to some very basic conclusions', which ones? Perhaps verify first whether those are correct and ask about that? I started a discussion in chat since it got so many up votes, so others might overrule me. For a more focused example of a sleep-related question you could check out: cogsci.stackexchange.com/q/868/21 $\endgroup$
    – Steven Jeuris
    Aug 22, 2013 at 14:42
  • $\begingroup$ P.s. some of the papers I link to in that question might get you started reading up on the subject. $\endgroup$
    – Steven Jeuris
    Aug 22, 2013 at 14:45
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    $\begingroup$ I'm not sure how this question is any more self help than...well almost all of the other ones here. He asks specific questions that can be answered - although I do think he should make them more qualitative rather than quantitative - but still keeping that aspect in. $\endgroup$
    – user3433
    Aug 31, 2013 at 14:04
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    $\begingroup$ From a site growth perspective, you also have to consider what the people want too...if this type of question got that many votes then that means people in general are interested in it. We'll rank for it in the search engines and get more traffic, and thus the site will grow more. I probably could of reworded it but, agh I got so much other stuff going on now. $\endgroup$
    – user3433
    Sep 1, 2013 at 1:16