Your body uses calories in each function that it does, from blinking your eyes to typing on your computer to physical movements, that it obtains when you eat food. Zero calorie foods, or Negative calorie foods, are foods that you consume that actually require more calories to break down and use as energy than the amount provided by the food itself. These foods can be a tremendous help when battling hunger and can help you feel more satisfied throughout the day. Beware though, you should still be eating foods that are good sources of protein, carbohydrates, and fats - don't just eat negative calorie foods!
Note: There are many other negative calorie foods. This is not a comprehensive list.
What is your favorite negative calorie food?