Plans (also ketogeniks keto based on total daily calories), with varieties of meal options. See their sample plans from the popular diets like South Beach, Slim Fast, Sonoma and the Mayo Clinic. Diet Bites offers a free ten day diet planner, and this includes detailed food preparation tips and guidelines. MoreForYourHealth outlines a 3 day diet plan used by a hospital for patients who need to lose weight fast, before surgery..