"Sit at times in front of the computer screen and have to read a sentence over and over again?"
What answers here indicate adequate sleep should be clear (if not: No, Yes, No, No) .
If six hours or less really too little sleep?
Ok, there is the theoretical possibility that you belong to a very small group of individuals who get there with six or fewer hours ... called Walker that the "sleepless elite". But quite honestly, if that were so, it would presumably you noticed quite early. And not only you, but also your parents or grandparents, as the explanation for this frugality when it comes to sleep is in genetics, is therefore inherited.
Also some technical details about the sleep is not lacking: sleep is defined and discusses the emergence of sleep. And this is not a trivial matter - with a sofa, one might think, the evolution has made a very nice luxury: foraging is nich, before refining can be asleep not protect himself sees with the reproduction's bad. Ok, you can do so times, but equal to one-third or more of our lifetime? There should then already really be good reasons ...
Key Takeaway: sleep, or rather, what happens during sleep with us is indispensable for the processing of information .
After all be included in the waking state during new information, it's in sleep mainly to reflection and integration that information. This means both saving and "strengthening" this information (reflection) and also the link and classification of what is learned in context with what we already know (integration). Our mental model of the world is so always accurate and ultimately strengthens our ability to solve problems, and allows us to have new insights.
What if I interleave a nap?
One can no doubt Walker: Sufficient good sleep is irreplaceable . By zockte night so just bring in with an extended nap again? Not a good idea. Power-napping could indeed temporarily increase the concentration, like a cup of coffee can, but neither caffeine nor nap really help us further when it comes to the more complex functions to which our brain is capable. These include,. As learning, memory, emotional stability, complex thinking and decision making.
How we sleep
Also found on this issue Walker interesting information in research. While that is sleeping in industrialized countries almost exclusively once a day (at night), is that in cultures where there is no electricity, different: It is true that even at night slept here an average of seven to eight hours - but by a semi- supplemented by one-hour nap in the afternoon. And since it can be assumed, the sleeping habits of those nations that in recent centuries (or even millennia) have not changed very little or, is here probably rightly maintains that we are in so-called "developed" cultures of our original sleep patterns have removed. To which is to emphasize a well-known example from Greece seeks: That men on the Greek island of Ikaria have four times the chance 90 years or older than men in America will be because there to keep the custom of an afternoon nap, nor is intact.
This means that a nap is great - but top just only one, and not a replacement for nighttime sleep !
And speaking (s) at age are ...
sleep in the course of life
From sleep patterns of children is interesting insights can be derived: Major leaps in development go always namely changes in NREM sleep ahead. NREM stands for non-rapid eye movement and the phases describes our sleep when we are not dreaming. Walker closes around the fact that Sleep is the driving force behind changes in our brain and not otherwise.
That one in old age less sleep needed by the way is a mistake. It seems that older people need as much sleep as middle-aged people - even if it is seemingly more and more difficult even to get to. With increasing age, our sleep is also fragmented - we wake up at night more often, which in turn leads to poorer sleep quality.
Regardless of the age, however, it is claimed, chronically disturbed sleep leads to physical discomfort, mental instability. reduced attention and memory impairment.
Do we really ever sleep tuition?
For Walker, the thing seems clear - otherwise he would probably also not the same written a 477-page tome .
Our sleep is his apparently very important and, accordingly, there is a whole series of practical sleep tips.
And we seem to have sorely needed as a society. Long commuting times (usually, anyway), Schlafprokrastination (if Netflix again just start the next episode ...), constant lighting, also increase with LEDs, regulated and often unchanging temperatures, caffeine (...), alcohol and become second nature Stechuhr- mentality - all these things tug at our need for sleep.
Even with alcohol is settled, because alcohol is bad for our sleep. And even equal in some respects, because alcohol