There are no foods that have a negative calorie value, but it is possible to obtain a negative calorie effect.
The Negative Calorie Effect
Fiber, in the correct amount, is good for digestion and it helps to prevent gastrointestinal ailments.
Green vegetables are low in calories. We can eat a lot of them without getting fat and their fibrous content can "fill you up". Some green vegetables may actually burn up some of their calories by simply digesting them. This is the "Negative Calorie" process.
It is very possible that weight loss happens in this diet because of the low calorie intake. Fibrous vegetables are very nutritious and low in calories.
Examples of Green Vegetables
The Green Vegetables Used Are:
Asparagus, broccoli, cauliflower, cabbage, and celery
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