Anaerobic exercise is a type of exercise that does not require oxygen to produce energy. It relies on the breakdown of glucose in the absence of oxygen to generate energy. Examples of anaerobic exercises include weightlifting, sprinting, and high-intensity interval training (HIIT). On the other hand, aerobic exercise is a type of exercise that uses oxygen to produce energy. It involves sustained, rhythmic movements that increase the heart rate and breathing rate. Examples of aerobic exercises include jogging, swimming, and cycling.