Eating a proper, nutritious diet offers numerous health benefits that keep you mentally and physically well. Proper nutrition doesn’t mean starving yourself, but instead means eating a diet balanced in lean proteins, carbs and fats. MayoClinic.com recommends getting between 45 and 65 percent of your daily calories from carbohydrates, between 10 and 35 percent of daily calories from protein and between 20 and 35 percent of daily calories from fats.