It's technically possible, but in actuality there are no negative calorie foods.
That being said...there are thermogenic (fat burning) foods that make our body work hard during digestion, thus reducing the number of calories we retain of that food.
Protein is a thermogenic! It's important to still eat healthy carbohydrates, but by replacing some of your daily carbohydrates with protein you can increase your metabolism, thereby helping you to "burn fat".
Here are some "fat burning" foods!
- Cayenne Pepper
- Olive Oil
- Citrus Fruits
- Green Tea