Overfat people blame their weight on a slow metabolism. In essence they are right.
Metabolism is actually a very complicated phenomenon.
We are constantly burning calories, because our body constantly needs energy. The heart needs energy to pump, the lungs need energy to breath, your eyelids need energy to blink. Every process in our body requires energy, therefore calories are burned to provide this energy. There are several ways you can help. A pound of fat at rest burns only 2 calories.