It involves stepping up and down on an elevated platform rhythmically or to a certain beat. Step aerobics not only helps an individual to burn calories but also boosts heart health by raising HDL, which is good cholesterol. This good cholesterol in turn prevents hardening of artery walls. Many research studies also show that there is significant decrease in bad cholesterol levels in individuals participating in step aerobics class or dance aerobics as compared to sedentary individuals.