4 years & up. Inspire good habits with these easy to read introductions Good Health Habits and Your Body Nutritious Living Books. Whether learning about proper nutrition or understanding how our bodies work, kids will get the facts they need to help keep them in good health.This wonderful set of books promote healthy living, literacy, activity, and nutrition. Encourage children to ask questions about concepts or vocabulary they are unfamiliar with. Set of 4 paperback books.