An aerobics class consists of choreographed exercises to music. Classes last 20-30 minutes and offer a total-body workout that can help develop stamina, endurance, and mobility. Heart-pumping aerobic exercise can help you to lose weight, by increasing your energy expenditure. When it comes to losing fat the main factor to consider is your energy balance. If you are goal is fat loss, you will need to consume less energy than you are using. In an aerobics class, you'll bounce, jump, twist, jog, squat and dance your way. Your body is continuously moving and burning calories. If you enjoy aerobics, going to this class consistently can be a fun way of achieving weight loss. To lose weight, you'll need to burn more calories than you eat. Aerobics is a high-energy exercise class with music. You'll be moving your whole body at a fast pace which can help to improve your cardiovascular fitness and to a certain extent help tone your body.