假如你叫李华，你校初三年级同学正在开展一场讨论，主题是“初三学生要不要参加体育锻炼”。请根据下面所提供的信息，用英语总结出讨论情况。
提示：
70%的学生
30%的学生
应该每天进行体育锻炼，但不要时间过长
锻炼浪费时间、使人疲劳
锻炼能增强体质，保持健康
锻炼以后很兴奋，较长时间不能投入学习
锻炼能使大脑休息，使学习效果更好
锻炼中可能会受伤
要求：语句通顺，句意连贯;词数为80词左右;发言稿的开头已写好，但不计入总词数。
Dear clamate:
I’m Li Hua After the dicuion we found that 70% of the tudent think they hould take all kind of exercie every day but not pend too much time. They think exercie build body and can keep them healthy. Sport alo let them have a good ret o that their tudy will be more effective.
On the other hand 30% tudent believe taking exercie i tiring and it’ a wate of time. They ay that after having port they are too excited for a long time to focu on their leon. And it’ poible to be hurt while doing port.