Nowadays, the stress happened to adolescents. Most often it's learning. The first reason is have a lot of homework. Is a national problem, whether primary, secondary, university students often have a homework big pile. Assume that there 1 homework per subject. But when multiplied with the number of subjects it has piles of homework that is extremely tedious. The second reason is don't understand about learning. Cause this is caused by ourselves or because the system was taught at school. The more learn is not understood, more stressed. Because afraid to fail the exam. The last reason is Pressure. The expectation of parents may hurt the children unconsciously. Specifically, the expectations is to give children are all good at learning, and special abilities. If the exam score is bad, they blame.