Aerobic-exercises

also called aerobic exercises. (used with a plural verb) any of various sustained exercises, as jogging, rowing, swimming, or cycling, that stimulate and strengthen the heart and lungs, thereby improving the body’s utilization of oxygen.
(used with a singular verb) a physical fitness program based on such exercises:
aerobics is a good way to get your body in shape.
noun
(functioning as sing) any system of sustained exercises designed to increase the amount of oxygen in the blood and strengthen the heart and lungs
n.

method of exercise and a fad in early 1980s, american english, coined 1968 by kenneth h. cooper, u.s. physician, from aerobic (also see -ics) on the notion of activities which require modest oxygen intake and thus can be maintained.

aerobics aer·o·bics (â-rō’bĭks)
n.

a system of physical conditioning to enhance circulatory and respiratory efficiency that involves vigorous, sustained exercise, such as jogging, swimming, or cycling, thereby improving the body’s use of oxygen.

a program of physical fitness that involves such exercise.

aerobics [(air-oh-biks)]

exercise designed specifically to improve cardiovascular fitness and, subsequently, the body’s use of oxygen. also called aerobic exercise.

note: the term aerobics usually refers to a specific kind of vigorous exercise, sometimes involving dance steps, that is set to music. other forms of aerobic exercise include running, cycling, and swimming.