I know you probably think that I'm not the type of person that would be able to answer a question like this but I just recently finished a diet where I lost thirteen pounds in two weeks. That's almost a pound a day average. I don't think it's healthy to loose to much weight to fast. Has something to do with shocking the body. This diet is a combination of other diets that I have come in contact with, but basically it's a calorie counting and portion conscious diet that even includes some sweets to help you keep from over indulging in that area. It also includes fruit, vegetables and even some canned goods to help add some variety to the mix. Did you know that a can of condensed chicken noodle soup only has 150 calories in it, furthermore do you realize that a twinkie only has 150 calories and only 40 of those are from fat, that's less than 30% and almost all fruit has no fat from calories. If you eat something relatively high in calories early in the day you can throw in a piece of fruit latter on that evening to help shore up the numbers. The average human adult burns around 2000 calories a day depending on the amount of activity. If you sleep 8 hours a day, that means you are awake 16 hours a day and you could eat every 2 hours consuming less than 200 calories 8 times a day and as long as you have a relatively active day you would be burning more than you consume.