Anything that maintains the target heart rate 60% – 90% of the Maximum Heart Rate is considered aerobic. If the heart rate is lower, then you haven’t reached aerobic levels. If your heart rate is higher, then you have reached an anaerobic level. During anaerobic exercise your body is consuming protein and energy is being produced without the benefit of oxygen. High intensity, high impact aerobics is not necessary to burn fat. For example, running for one mile burns only 20% more fat than brisk walking for one mile. It’s important to focus on the exercise and maintain the target heart rate. Use music with sufficient beats per minute to intensify the exercise session.