Foods that take up more caloric energy to digest then
the calories that they contain. Your body has to expend
energy in order to digest and absorb foods. Negative
calorie foods take more calories to digest than the
actual calories in the item of each food. Even though a
food may contain equal amount of calories, much less of
these calories can possibly be turned into fat in the
following negative calorie foods because fewer calories
are actually available to the body. This gives these
foods a natural fat-burning advantage.