As you all know, the study work is heavy in high school. There are often more than 10 courses a day including the evening. That will take more than 9 hours in study a day, and without weekends. The students in high school are exhausted after school and not willing to do the physical exercises anymore. In fact, it is not only very bad for health but also bad for study. The teenagers have to do enough exercises to keep healthy and growing tall. And doing physical exercises can make a people strong and lighten one up, refill the energy to study more efficiently. So, the high school students should do physical exercises. They can do some sports, such as playing football or basketball, running, swimming and so on.

眾所周知，在高中的學習任務是很繁重的。包括晚上，每天經常有超過10節(jié)課。這將會占用9個小時用來學習，還沒有周末。放學后高中生都已經筋疲力盡了，不再想去鍛煉身體。實際上，這不但有害健康，還不利于學習。青少年必須要做足夠的身體鍛煉才能保持健康，繼續(xù)長身體。而身體鍛煉能讓人強壯和放松，重新注入能量，讓學習更加有效率。所以，高中生應該鍛煉身體。他們可以做些運動，例如打籃球或者踢足球、跑步、游泳等等。