I did an Objective review of this product, so basically I'm normally skeptical of these sort of programs, but boy I'm suprised by the information given and value for your knowledge.
All foods have some calories. No food is actually "negative calorie" food. But the overall effect of certain foods in our body is that of "negative calories". Negative calorie foods are foods, which use more calories to digest than the calories the foods actually contain! Calories from these foods are much harder for the body to breakdown and process. In other words, the body has to work harder in order to extract calories from these foods.This gives these foods a tremendous natural fat-burning advantage, and these are also known as fat burning foods.