Peer pressure is being influenced by the peer group members. It often happens to children during puberty. The group defines some social values. For somebody to stay "cool" in that group, they feel as if they have to act like other people in that group. Social pressure (and wanting to be accepted or in favour inside the group) leads people to do things they would not do otherwise. For example, it can influence a person to smoke cigarettes or marijuana, to drink alcohol, commit crimes, and/or many other things that they might regret. Through adolescents are seen adults from external physical point of view, they lack proper mental maturity. Similarly, they look physically matured and do not intend to be in children's group but adults also do not value them as adults. Therefore, they create peer group of their own age to enjoy themselves. They have strong faith and belief on the friends of the same groups. Because of the changes they experience, the new desires, aspirations and interests are developed. They become sensitive and sentimental.