What classes do you apply for in the summer vacation, so that you can lose weight and exercise? (interest class)
If you are studying, improve your English. English is very important now. If it is pure interest, girls can learn to dance or piano. Can increase temperament and cultivation. But it really helps to keep learning. Boys can learn Taekwondo and Judo to be masculine and exercise. As for short-term interest classes, you can sign up for swimming, which is fast and effective.