parts of the brain allows people to become addicted to certain things. Some people can experience a certain feeling in which they enjoy. It can become addictive with certain brain chemistry. For example, Mike enjoy drinking coffee and smoking cigarettes, every day. Billy enjoys drinking coffee but refuse to smoke. Mike enjoy smoking but Billy does not take interest in it. “Some people may enjoy a substance or activity so much that it becomes very tempting and difficult to resist” (amhc.org). In Mike’s