Cardio training is crucial to good health. Keeping the heart healthy can help stave off debilitating diseases such as hypertension, diabetes, and atherosclerosis. In addition, cardio training burns more calories each day, helping create the energy deficit you need to lose inches. However, cardio training must be coupled with a good resistance training plan to see maximum results.
There are a few important factors to understand. First, while cardio training may burn a good amount of energy (calories) during the activity, it will not burn the same amount of calories as increased muscle mass will. Muscle burns calories all day long. Second, the heart pumps oxygen to our muscles. We need oxygen to burn fat. So, an efficient cardiovascular system will keep the heart pumping steadily, increase oxygen intake and distribution, and make our fat-burning engines (muscles) work better.