Negative Calorie Foods! Do they really exist?

Negative Calorie Foods ~ Vegetables
asparagus
beets
broccoli
cabbage (green)
carrots
cauliflower
celery
chicory
chili peppers
cucumbers
endive
garlic
lettuce
onions
papayas
spinach
turnip
zucchini
Negative Calorie Foods ~ Fruit
apples
cranberries
grapefruit
lemons
mangos
oranges
pineapple
raspberries
strawberries
tangerines

The quote below came from the Negative Calorie Foods Site:

“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.

A piece of dessert consisting of 400 calories may require only 150 calories to be digested by our body, resulting in a net gain of 250 calories which is added to our body fat! According to this theory, for example, if you eat 100 calories of a food that requires 150 calories to digest, then you’ve burnt an additional 50 calories simply by eating that food.”