One of my stressful thing

When I was in the last year of elementrial school, we had to take a very important final exam for get into the new school. And there are many schools in the city, but looked like everyone wanted to get in the best middle school. I had to woke up early every morning as 6 o'clock,and studied a lot during the day time till about 11 o'clock. At that time, I was only 11 years old. I didn't really know what's stress? I just knew I needed to get in the school I wanted to go.But my mom was very worry about me. She said I didnt need to study that hard,health was more importan. I always got cold and had fever.Many times ,I didnt able to go to school, I felt really bad. I think that is my body felt stress, so I was always ill.