What is an advantage of interval training?

• A. Long Periods of Continuous Exercise
• B. Short Periods of Time With Rest Which Allows Recovery
• C. It Does Not Develop Both Aerobic and Anaerobic Fitness
• D. Heart Rate Cannot Be Monitored

Answer: (B)

Interval training works by alternating short bursts of high-intensity effort with brief recovery periods. The rest allows your body to recover enough to start the next bout at a high intensity, so you can push hard repeatedly. This means you can achieve a higher overall training intensity in a shorter time than steady, continuous exercise, making it very time-efficient. Repeated hard efforts train both energy systems—anaerobic during the intense bursts and aerobic over the whole session as your heart and lungs work to recover and sustain the next effort. It also helps with lactate tolerance and rapid recovery between efforts, which is valuable in sports requiring quick accelerations and sprints.