Aerobics is a form of aerobic exercise. Aerobic exercise involves activity of moderate intensity paced out over a relatively longer duration.
The mechanism
Aerobic exercise derives its benefits from the increased, generally uniform, consumption of oxygen by muscles and other tissues facilitating the expenditure of calories in a sustained and controlled manner. It combines stretching and strength training exercises with the aim of improving all aspects of fitness including, flexibility, Cardiovascular strength and muscular strength. It can be performed individually or in a group, depending on preferences, so as to optimize a regular routine. 
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