The study of nutrition may focus on how to prepare healthy foods, which diets can cause diseases or how to store different kinds of foods. The study of how foods affect people can be beneficial for nutritionists, health bloggers or personal trainers.

A certificate is an educational goal for many students who want to improve their visibility among aggressive job applicants. Certificates may help provide students with increased skills and experience in a number of diverse disciplines, such as business, finance, hospitality, leadership, and management.