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One study found that in Germany, students did not sleep well and half of them felt tired during the day due to lack of sleep and complained of fatigue and sleep resistance. It was also found that the lack of sleep in the students made them stressed and that the shorter the hours of sleep, the more tired they were.
The study included about 9,300 students from grades five to ten in six German states. The researchers explained the lack of sleep students with the increasing use of computers and smart phones.
Boys and girls who reported spending more than four hours a day in front of screens and sleeping on average less hours (7.3 hours on average), said Rainer Hanifinkel, head of the study at l & # 39; IFT. , Those who use smart phones, tablets, etc. for less than an hour a day, with an average of 8.9 hours of sleep per day, and this difference decreased in all age groups of students surveyed.
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