Aerobic exercise requires oxygen and usually lasts over a long period of time.
Exercise of medium to high intensity that relies mostly on the aerobic energy-generating mechanism is referred to as aerobic exercise (also known as cardio). Aerobic exercise refers to the use of oxygen to sufficiently meet energy demands.
The term "aerobic" literally means "related to, involving, or requiring free oxygen."
In general, activities of low to moderate intensity that are adequately supported by aerobic metabolism can be carried out for long periods of time. According to the first comprehensive study on aerobic exercise, examples of this type of cardiovascular/aerobic exercise include medium to long distance running/jogging, swimming, cycling, and walking.
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