EzineArticles.com: Negative Calories occur when you eat a certain food slightly cooked or almost raw and your body begins to burn more than the actual calorie intake from these foods during the digestion and processing stage. For example, if you consume 1 large apple, which may contain 116 calories, your body will began to digest and process what you have consumed and during this process your body may burn up to 130 calories or more even though you’ve only consumed 116.

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Negative Calories – What Does This Mean and What Foods Contain Them?