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任务型阅读
The stressful school life and unhealthy lifestyles cause some problems to students．Here are some key mistakes and some tips．
■Sitting too long
So much homework and many computer games make students sit for several hours without standing or walking around．Because of long time sitting,some students have got diabetes (糖尿病) and heart disease(疾病)．
Tips：●Get up and out of your chair for about five minutes every hour．
●Walk over to a person instead of sending e-mails or text messages．
■Eating irregularly
Some students develop unhealthy eating habits．Fast food becomes more often．Heavy studying and stress prevent students from eating meals regularly．
Tips：●Eat breakfast with eggs at the start of every day．
●Buy healthy snacks like nuts and fruit,and eat them between meals．
●Have three meals a day at the right time．
■Sleeping less
Not enough sleep breaks the smooth cycle of our biological clock(生物钟)．It can cause heart disease and high blood pressure(高血压)．
Tips：●Be sure to sleep for seven to eight hours every night．
●Have a rest for about 30 minutes at noon．
■Having lots of energy drinks
An energy drink or an extra cup of coffee might seem like the only way to get through a late-night study time．High levels of caffeine(咖啡因) can also cause high blood pressure．
Tips：●The safest way to get more energy is to eat regular meals,sleep well,exercise and drink lots of water．
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