The concept of “the diet never changes” is an interesting one for maintenance. When you lose weight on a high protein, low calorie, low carbohydrate diet – you are usually eating 500-1000 calories a day. Most of your calories come from the protein your body needs to prevent muscle break down. If you continue to eat the same 500-1000 calories of mostly protein you lost weight on, you can probably add an equal number of calories of whatever you’ve been missing (keep sugar to a dull roar, or you’ll likely feel rotten) – and maintain your weight loss. For example, if you lost weight drinking 4 Formula a day, consider staying on the same 4 Formula a day for maintenance, and add the foods you’ve been missing most.