To ensure that you consume a balance of these fuel sources and nutrients it is recommended that all of your main meals should be based on the rule of ½ plate of fruit or vegetables (or salad), ¼ of your plate should be from a protein source (for example fish, lean white or red meat, eggs, lentils) and the remaining ¼ of your plate should be made up of wholegrain or low glycemic index carbohydrates.