You will find a free list of negative calorie foods below, but first let us consider what it means. There is no such thing as negative calorie - a calorie is a unit of heat and it can not be negative. So, when people talk about negative calorie foods, it just means calories of food level low enough that it takes more energy to eat and digest food than contain.

For example, if you consider the water to the food, then cold water of the negative calorie food. Contain no calories at all and your body has to spend energy to bring it to the temperature of blood. So every time we drink a glass of cold water we burn some calories and lose weight a little. But there are very few foods like this. Most food in the list do not actually use more calories than they add, or if they make a negligible effect until you remember that at the same time the body expends energy just to stay alive and breathing. Celery for example does not provide enough calories to cover both the energy needed to digest it, plus the energy that we spend, even when we do nothing. So that's why people call it a negative calorie food.

Negative calorie foods are most attractive to Anorexia. Negative calorie diet would obviously result in starvation in the long term and malnutrition can occur with surprising speed. Burn calories usually come from muscle mass, and the result is a lack of energy and waste.

A more healthy way to use a negative calorie food is a form of fasting or detox. This is something you can do to one to three days after Christmas or other times when you have to eat foods rich in the above. Provided you are healthy can be a great way to cleanse the system. But the best is still to take medical advice before trying this. If you decide to use a negative calorie detox, keep the following things in mind:

1. It is never a good idea to eat large amounts of one type of food, especially fruits. Many foods contain substances that can damage if consumed in excess. For example, sour orange and pineapple can damage your stomach lining. Other foods put an excessive burden on the liver or may cause diarrhea. So try to use all the different foods in small amounts.

2. Do not spend all day eating. You will only become bloated and feel sick. If you only do this for a few days, you do not need to feel too hungry. Plan four or five salad eat every day, and let your digestion rest at other times.

3. You'll feel more satisfied if you eat slowly and chew your food thoroughly. You also will use more calories that way. So, if the food can be eaten raw, which would be more effective than cooking them. Foods like carrots and beets will also be more satisfying if you eat them grated.

4. Schedule time when you do not have a significant commitment. As with fasting or any kind of detoxification, you may suffer some uncomfortable symptoms including headaches, fatigue, depression and irritability. If this becomes severe, stop the diet and the doctor.

5. When you end the detox, plan a gradual return to normal eating. If all the above points are checked and passed, let us turn to the list of foods.