If the you need more structure to your diet than the guidelines outlined on ExRx, you can develop your diet using certain tools on ExRx.

• Dietary Guidelines
• Food Exchanges
• Progressive Dietary Goals

Initially get a body composition with an accurate body weight every month. A fitness club or nearby college with a PE department typically offers this service. Find a very experienced tester that will be available for the next several months. Along with a body composition test, an accurate weight is required to estimate changes of fat and lean body weight. Weigh your self the same time of day every time you have a body composition test. Use the same scale every time. Weigh with no or minimum clothing. Have the same tester test you each time. The data can be enter in Body Composition Calculator.

After the first body composition, be prepared to follow the initial diet you designed using the ExRx diet calculators.

• Estimate your caloric needs using the Calorie Requirement Calculator.
• Design your diet using the estimated calorie output and guidelines on the Food Exchange Calculator.
• Print out all food exchange lists in the top of Main Menu B of ExRx Diet & Nutrition.
• Print and use the Daily Activity and Food Exchange Form to plan the times you will exercise and eat.
  • On this form, also plan when you will eat the exchanges from the Food Exchange Calculator using the first several Dietary Guidelines.
• Print, copy, and use the Food Exchange Journal to record your daily consumption until you have developed a consistent pattern to your diet.

Do the best you can the first few days. Weigh, or measure all food until you are able to estimate portions accurately. It may take some time to familiarize your self with the exchanges and to make other adjustments to your diet. It is important to be fairly consistent with your calories. Try to make up for a deficit or surplus in calories within the next day only up to 500 calories.

If you do not find a food on the lists. Guess on the most appropriate exchange category, note the calories per exchange, look up the calories per serving on the label or other source, and calculate the quantity of food per exchange.

After a month on this diet, measure changes to your body composition. Analyze if you need to make any changes to your exercise program or diet. Don't fret if the changes in your body camp was as great as you expected. This was your first try. Also see Interpreting Changes in Fitness Test Results. Make the necessary adjustments and retest the following month. Continue to make the necessary changes to both your diet or exercise program until you are making adequate progress. Before decreasing your calorie intake, consider changing the foods you eat first (see Foods that May Aid in Fat Loss). When decreasing calories from the diet, make the smallest changes necessary to illicit a change (eg. -250 kcal to -500 kcal). This will minimize your metabolism slowing down too much, making it easier for future progress.

Initially this structured diet program takes considerable effort. The most common complaint is "I can't possible eat all this food". Persevere, your body will adapt. After sometime using the food exchanges and measuring your foods, your diet will become second nature. At this point you may decide you do not need to keep a written record nor measure everything you eat.