For it, you need to choose a health-related behavior you want to change and find 1 articles that are related to your subject, summarizing them and mentioning how they are related to your subject and how you get the benefit from them to help you reach your goal. 
 APA style https://owl.purdue.edu/owl/research_and_citation/mla_style/mla_formatting_and_style_guide/mla_formatting_and_style_guide.html