The traditional narrow focus on the role of physical health in wellness is in contradiction to the direction in which the wellness field is moving, toward mind/body wellness and a whole-person approach to well-being. In this chapter, we delve into several topics—nutrition, diet, and exercise—that have traditionally been associated with physical wellness, but with a different approach that centers on a whole-person, research-based perspective. Nutrients are the building blocks of a healthy body and mind, and they fuel our growth, enable us to maintain day-to-day health, and repair bodily systems when necessary. There are six fundamental nutrients for optimal human functioning: proteins, carbohydrates, fats, vitamins, minerals, and water. A diet is what and how much a person eats; in other words, it is the type and quantity of food we ingest. Mind-body approaches to diet include mindful eating, intuitive eating, and holistic nutrition, each of which (to different extents) is based on eating healthful foods at times and in amounts that are dictated by the body’s hunger and satiety cues. Exercise is any physical activity that features planned or repetitive physical movement. Traditional notions of exercise include running, swimming, biking, and lifting weights, but walking, dancing, roller skating, pickleball, yoga, and even hula or gardening are also fun and worthwhile forms of exercise.