Writing prompt: After-School Activities

Student essay:
I take part in two activities.One activity I have is sports.After I went to high school.I decided to do exercise everyday in order to keep healthy.The exercice I do inclouds running,swimming,jogging and so on.I can also have a good time when I am doing exercise.The other activity is watching movies.Specially,all the movies I watch speak English.I try my better to comprehense what characters say all the time.In my opinion,this way can make me learn English better.
For choosing right activitise,I have some pieces of advice to give.First of all,choose what you like so you will know the fun of activities.Othersides,you should find a balance between hobby and study.We should avoid activities affect oue study.It's important to arrvenge time .

Corrected essay:
I take part in two activities. One activity I have is sports. After I went to high school, I decided to do exercise everyday in order to keep healthy. The exercise I do includes running, swimming, jogging and so on. I can also have a good time when I am doing exercise. The other activity is watching movies. Specifically, all the movies I watch are in English. I try my best to comprehend what the characters say all the time. In my opinion, this way can make me learn English better.
For choosing the right activities, I have some pieces of advice to give. First of all, choose what you like so you will know the fun of activities. On the other hand, you should find a balance between hobbies and study. We should avoid activities that affect our study. It's important to arrange time.