You can start by eating minimally processed foods more often, such as fresh fruits and vegetables, lean proteins, and whole grains. Cooking at home allows you to apply volume eating principles as you have more control over the ingredients and cooking methods (lighter options include roasting and grilling).You can start by eating minimally processed foods more often, such as fresh fruits and vegetables, lean proteins, and whole grains. Cooking at home allows you to apply volume eating principles as you have more control over the ingredients and cooking methods (lighter options include roasting and grilling).