日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

  Home>News Center>Life
         
 

Lack of sleep major threat to teenagers' health
(Xinhua)
Updated: 2004-05-28 11:18

Lack of sleep has become an invisible threat to the health of teenagers, according to a recent survey by the China Youth and Children Research Center (CYCRC).

The survey, conducted among 5,846 students in Beijing, Shanghai,Chongqing and seven other cities, showed that 10.4 percent of those under 12 years old slept less than eight hours a day.

Among children aged 13, 14 and 15, there were 22.1 percent, 33.1 percent and 44.6 percent, respectively, sleeping less than eight hours per day, revealed the survey.

This was much lower than doctors recommendations that children and teenagers get up to at least nine hours of sleep, said the survey.

Experts blame it mainly on China's highly competitive education system. Even children in their early teens are made to focus on tests to enter prestigious high schools.

Parents and teachers usually put great pressure on children and teenagers to make them study hard, but leave them little time for relaxation. But the problem of lacking sleep has become so serious that experts are worried that it will harm students' memory, thinking and even physical growth.

Sun Hongyan, a CYCRC official, said that children's physical growth was mostly completed in their sleep.

"The time between 10 p.m. to 1 am is the most active period for the secretion of growth hormones and the metabolism of body cells. Invisible damages caused by the lack of sleep at this period, which is afflicting one tenth of primary school kids and one third of middle school students, cannot be made up by sleep in other times," Sun said.

Though children's physical growth may be slowed by lack of sleep, mentally they age prematurely and start behaving as grown-ups with adult concerns, she said.

"Sometimes I really want to give up, because I worry too much,"complained a sixth-grader in a "grown-up tone" of voice.

Sun reminded parents, schools and the whole society to pay more attention to this problem, hoping they take specific moves to ensure children get sufficient sleep and to provide them a healthy environment for growth.

 
  Today's Top News     Top Life News
 

China: Foreign troops should leave Iraq before Jan 2005

 

   
 

3 children found decapitated in apartment

 

   
 

Release of new auto policy 'within days'

 

   
 

Unsafe blood collection targeted

 

   
 

Britain berated over Dalai visit

 

   
 

US: Cleric tried to start terror camp

 

   
  Tragedy puts avant-garde architect in limelight
   
  Season to flaunt bold style imminent
   
  Italy sets strict pizza guidelines
   
  To shoot or not to shoot?
   
  Anonymous workers in non-existent industry
   
  Shanghai's rive gauche
   
 
  Go to Another Section  
 
 
  Story Tools  
   
  Feature  
  Maggie Cheung snatches Best Actress Award  
Advertisement
         
主站蜘蛛池模板: 性做久久久久免费看 | 性XXXX18精品A片一区二区 | 天天摸天天操天天干 | 亚州天堂网 | 午夜社区 | 一区免费看| 小明永久成人一区二区 | 精品欧美乱码久久久久久 | 国产在线观看www鲁啊鲁免费 | 色AV亚洲AV永久无码精品软件 | 久草在线成人 | 久久精品a | 亚洲精品久久久久久中文字幕小说 | 欧美性视频网 | 免费高清成人啪啪网站 | 国产高清成人 | 精品无码久久久久久国产 | 成人亚洲视频 | 国产福利不卡视频在免费 | 欧美激情免费观看一区 | 免费一级片在线观看 | 日本网站在线播放 | 国产黄色在线观看 | 国产欧美日韩免费 | 午夜影剧 | 午夜私人影院粉色视频我要 | 狠狠澡夜夜澡人人爽 | 99在线精品视频 | 精品一区二区三区在线播放 | 国产剧情一区二区三区 | 成年在线视频免费视频观看 | 白色白色视频免费观看 | 亚洲国产区 | 日日夜夜精品视频 | 精品粉嫩aⅴ一区二区三区四区 | 欧美ab在线 | 国产精品99爱免费视频 | 精品视频二区 | 毛片a片| 狠狠做深爱婷婷久久一区 | 一区二区三区高清视频在线观看 |