Get up! Get up! The results of this academic work are astonishing: here is what could fuel your next conversations with your friends (who sleep too much). 
There are convictions and certainties which become knowledge shared by everyone and which is never called into question. And this can concern everyday things, everyday habits, such as work, leisure, time shared with others. with his friends, the time spent &agrav; cook or time &agrav; dedicated to à… sleep.
It is not always easy to determine the optimal length of a 'night's sleep" ;. Some see it as a personal fact that varies according to each person or according to age. While a few hours will be enough for some, others will live in slow motion without their eight hours of sleep. At least it's a belief that many share.
Generally speaking, it is common to understand that adults should sleep between 8 a.m. and 9 a.m. ;nbsp;hours, or even between 7 a.m. and 9 a.m. It is also said that for children, between 9 and 11 hours are necessary and between 8 and 10 hours per night for adolescents.
But not all of these recommendations are really well-founded. In 2015, researchers at the University of California Los Angeles conducted a study, published in an American journal and relayed by the British daily The Independent, based on hunter-gatherer populations and reports that their nights are as short as those of so-called “industrial” societies. And even shorter.
Researchers studied the sleep rhythms of three different populations. The companyé Hadza located in northern Tanzania, the San in Namibia and the Tsiman people in Namibia. in Bolivia. These three populations from Africa and South America are all nomadic and live by hunting and gathering.
Result, six hours of sleep would be enough for a good night's sleep. The study reveals that the populations studied sleep an average of 6.4 hours per night. Without the slightest constraint. These results indicate similar habits to those of our ancestors of the pre-modern era. The study therefore reveals that there is not a significant difference between the nature of the sleep of the so-called populations. quot;primitives" and those "industrial".
She highlights this: "Sleep in these traditional human groups is more similar to that of sleep. what sleep is today than we think. She also adds that "societiesé “traditional people do not sleep more than most individuals in industrial societies”, and that contrary to received ideas, the sleep rhythm of these populations do not necessarily follow the natural light cycle, with the study specifying that participants remained “awake” “The use of fire as an "artificial light" has notably been é highlighted by researchers.
Consequently, the belief that industrialized societies sleep less due to work habits and The use of screens is therefore not proven. Just like the idea that a good night's sleep is between 8 and 9 hours.