Which of the following best describes anaerobic exercise?

Anaerobic exercise is characterized by high-intensity activities that are performed in short bursts without relying on oxygen for energy production. This type of exercise focuses on strength and power, where the body relies on stored energy sources, such as glucose, rather than aerobic metabolism that requires oxygen.

During anaerobic activities like sprinting, weightlifting, or high-intensity interval training (HIIT), the exertion level is so high that the body cannot supply enough oxygen to the muscles in the short term. Therefore, it uses energy produced through anaerobic pathways. This is different from aerobic exercise, which is typically lower in intensity and requires sustained oxygen supply.

The other options describe different types of physical activity. Continuous low-intensity activities are more synonymous with aerobic exercise, which promotes endurance. Prolonged exposure to oxygen during workouts pertains to aerobic capacity development, while low-level activities aimed at improving endurance also focus on the aerobic system. In contrast, anaerobic exercise is specifically about high intensity and short duration, emphasizing the explosive, power-producing capabilities of the body.