In my opinion, I think that it is really good for students to take part in outdoor activities in summer. In the summer, the weather is very good, and the air is fresh and clean. If students spend all their time at home, they will get lazy. They will not do any exercise. So, it is very bad for their health. Moreover, if students only study and do not play games, they will get tired of study quickly. It is also bad for their study. If students want to be healthy and do well in their study, they should take part in outdoor activities.