Adolescence ranges from 14 to 18 or 20 and can be defined as a process of identification with adults. This transition from childhood to adulthood involves personal unrest. Adolescents are influenced in their development by several factors: moral factors: it means relationship with friends and adults, society and institutions and the acquisition of a system of values. Personal factors: relationship with one’s body image, emotional and sexual experience. Teens have to experience all of these factors but there has to be a balance between failure and success to achieve a positive self-image. When a teenager feels angry, sad, depressed, rejected or dissatisfied with his body image or because he is unsuccessful in life such as in sports, school, peers, he may be encouraged to seek deviant, even socially unacceptableattitude transgressing experiences. Boys direct their aggression towards the outside, towards others and towards society. They may have problems like risky sexual activities without considering antisocial behavior and depression. They may even tend to use illegal drugs, with different effects.