The best way to lose belly fat is through cardio exercises such as running, brisk walking, tread mill and many more. However, exercise should be accompanied by proper diet. In particular, a person who wanted to lose fat belly must avoid foods that are high in carbohydrate content.
The best way to lose any fat is to reduce caloric intake, eat a higher level of vegetables than proteins and carbohydrates, and increase exercise. In one week, most only see a loss of retained fluids and no actual fat.
You can start losing belly fat but don't expect to lose it all in a week. Start by eating right and exercising regularly. Stomach crunches and leg lifts are great exercises to do to get rid of belly fat.