In order to burn certain amount of calories you must be spending around 30 minutes on the machine, in case you are using the traditional aerobic cardio to lose weight. It is believed that in order to lose 1 pound of fat every week, you must lose 500 calories every day or every session.
This is fundamentally a myth that people has been brain washed with. Also, whether this weight loss can be attained through aerobic cardio is also not clear.
