Anaerobic exercises are not dependent on oxygen, thus the name. This is why it is used in non-edurance sports. It is high in intensity with little exertion. An example of this would be weight lifting. This is a type of exercise that body builders use to build muscle mass. Instead of oxygen, anaerobic exercises rely on energy stored in the muscles.
<span>Correct option is b as in swimming air is not involved. Anaerobic exercise is one in which air is not used. Swimming is using water instead of air due to which it is in anaerobic category. Swimming is done in water and air is not used in this exercise.</span>
