The adolescence is a stage for which we happen all the persons, in her a series of changes exist in the body and in the mind. It grows bolder in height, increases our corporal weight, we mature psychologically, it increases our capacity of reasoning etc. The duration of this stage can change according to the person, normally in the beginning of the adolescence the children end the primary school and begin the secondary school. The adolescence includes from 11 years up to the 19 though it is not...