Aerobics done at a moderate intensity (130-pound person) for 30 minutes can burn approximately 186 calories.

Cardio (Step Aerobics) Active Lifestyle

Muscles Worked
Complete body workouts

Position and Movement
Depending on the type of aerobics you are doing and the type of instructor you have for the class, step aerobics can be very simple to very advanced. Wear a pair of cross trainers for these classes, as you may be doing plenty of jumping and horizontal movement.

Tips
Always be aware of your position in relation to the step for obvious safety reasons.

Consult your physician before starting any diet and/or exercise plan.