Mornings are often challenging for sleep-deprived and tired students as they prepare and adjust for the new day, but is getting up too early really necessary? According to a study published in the journal Pediatrics, the answer is no. Sleep is especially important for adolescents, but many of them don’t get enough of it. Earlier Medical News Today reported that over the past 20 years, the number of hours of sleep for adolescents in the United States has decreased. The WHO recommends 8.5-9.5 hours of sleep per night for teens, but since 2007, 2/3 of high school students have failed to meet the standard. To explore the impact of class time on student sleep, CDC and U.S. Department of Education researchers obtained and analyzed data related to the 2011-2012 SASS, with nearly 4,000 public middle and high schools included in the study. The researchers found that most middle and high schools started classes too early, with less than 1 in 5 schools starting at 8.30 am and later (in fact, the percentage of schools in China that started after 8.30 am was 0). Dr. Anne Wheaton believes that getting enough sleep is important for students’ health, safety and academic performance. However, starting school too early will prevent most young people from getting enough sleep. Therefore, she recommends that school start times be delayed. The researchers suggest that health workers should raise awareness of the importance of adequate sleep in general, and school health workers in particular. However, I believe that no health care worker does not value the importance of adequate sleep, and no health care worker can have enough sleep. To address the problem of sleep deprivation, the study recommends that doctors actively educate the population about the importance of adequate sleep, encourage parents to monitor their children, such as no cell phone use before bedtime, and give encouragement to children who behave well. In today’s world, the problem of sleep deprivation is commonly ignored. Last year, the CDC advised that sleep deprivation has become a public health problem. Therefore, follow-up studies should focus on how sleep deprivation is addressed and its root causes. So, what harm will sleep deprivation bring to the organism? 1, the body’s immunity decreases, and resistance to various diseases is weakened. 2, long-term insomnia can lead to hypertension, heart disease, hyperlipidemia, senile dementia. 3, memory loss, headache. Insomnia often leads to daytime mental discomfort, dizziness, tinnitus, forgetfulness, neurasthenia, etc. 4, affect work, study and life. Insomnia often leads to daytime mental discomfort, low work efficiency, nervousness and irritability, do not get along with the surrounding people, depression, boredom, and in serious cases, may lead to pessimism and anxiety. 5, plant nerve dysfunction, inattention, reduced thinking ability, depression, anxiety, mental tension and other emotions, dysfunction of the cerebral cortex, causing plant nerve disorders, serious cases form psychosis, neurosis, etc. 6, premature aging, shorten life expectancy. Decrease in body resistance, reduce physical quality, accelerate aging, cause a variety of diseases, shorten the life expectancy of people. Warm tip: What about the sleep status of Chinese children and adolescents? Most of them are inadequate, mainly for desperate study, what is the effect of this on the physical condition, I hope someone comes out to study. Professor Shen Xiaoming, a pediatrician, cited data in one of his lectures that Shanghai school-age children have a sleep deprivation rate of 83.3% on weekdays, and even on weekends nearly 50% of children still sleep less than 10 hours. And sleep deprivation among Chinese children is clearly correlated with schooling, “relevant surveys show that Chinese children are sleep deprived from the age of 6, the day they start elementary school”.