Health psychology interventions can be implemented within primary or secondary prevention services (Hallas, 2007). Health psychologists design and implement cognitive-behavioral interventions with individual patients and groups to change health behaviors. Healthy behaviors refer to the actions and behaviors of an individual, a group and/or an organization. For example, when someone is stressed at work, this could be attributed to the person's coping strategies, but it could also be related to the decision-making behavior of the manager, which in this case would be the organization (Kok & Schaalma, 2007). Included within the category of health behaviors are the use of medical services, adherence to medical diets, and self-directed behaviors such as nutrition, physical activity, smoking, and alcohol consumption (Marks, et al., 2015). All these behaviors are usually divided between behaviors that improve health and behaviors that compromise it (Bennett, Conner & Godin, 2007). How an individual behaves towards health can determine the outcome of the disease. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an original essay Furthermore, behavior management is a key factor in preventing and addressing chronic diseases (Matarazzto, 1982). Chronic patients' behaviors contribute to their adaptation to disease outcomes and pain management (Stanton, Revensons & Tennen, 2007). This highlights the importance of managing behavior and change in someone's health and wellbeing. Health psychologists must understand and intervene in changes in both psychological and behavioral processes around illness and health care. Changing the behavior of patients and healthcare professionals can be beneficial to the healthcare system (Kaplan, 1990) and should be a major goal of health psychology. Health psychology training for healthcare professionals HPs are also employed to train other healthcare professionals so that they can better understand the psychological impact of illness and treatment and improve professional-patient communication (Gatchel & Oort, 2003). Fields of knowledge that HPs might teach may include the biopsychosocial model of health, statistics and research methods, theories, and techniques of behavior change (Winefield, 2007). They could also use their experience in designing and implementing interventions to support other health professionals in providing interventions and developing their own design (Hallas, 2007). In more applied settings, health psychologists can train skills such as communication and interviewing, treatment adherence, promoting a healthy lifestyle, and managing job stress for healthcare workers. Another important part when it comes to the training of professionals is the supervision by healthcare psychologists of other people who are preparing to be one of them (Horn, 2007). Supervision involves an exchange of information between the supervisor and the trainee. The supervisor must identify what the trainee needs and guide him in the right way to understand, experience and reflect on the knowledge acquired (Miville et al., 2014). Health psychologists can also use their statistical and research knowledge to participate in research projects. Many questions and difficulties arise during healthcare practice that require further research to provide evidence-based practice (Hallas, 2007). This allows HP to.