Which characteristic is typical of anaerobic exercise?

• A. Short bursts with no rest
• B. High intensity over a short duration
• C. Long duration at moderate pace
• D. Low intensity for extended time

Answer: (B)

High-intensity, short-duration efforts are typical of anaerobic exercise. In these moments the body relies on energy systems that do not require oxygen, delivering quick power through stored ATP, phosphocreatine, and anaerobic glycolysis. These systems power all-out efforts for only a few seconds up to a couple of minutes, as seen in sprinting, heavy lifting, or explosive jumps. That’s why this characteristic best fits anaerobic activity. In contrast, long-duration at a moderate pace or low-intensity extended time depend on aerobic metabolism and oxygen delivery over longer periods, supporting endurance. Short bursts with no rest could describe some maximal efforts, but most anaerobic workouts include brief recoveries to replenish energy stores and sustain performance.