What type of training involves performing exercises in quick, intense bursts with short recovery periods?

High-intensity interval training (HIIT) is characterized by short, intense bursts of exercise followed by brief recovery periods. This training method aims to maximize calorie burn and improve cardiovascular fitness in a shorter time frame compared to traditional steady-state exercise. By alternating between high-intensity effort and rest, HIIT keeps the heart rate elevated, enhances metabolic rate, and promotes both anaerobic and aerobic endurance.

The structure of HIIT makes it highly effective for improving fitness levels quickly, as participants push themselves to their limits during the intense phases. This not only builds strength and stamina but also stimulates the afterburn effect, leading to additional calorie expenditure even after the workout is finished.

Endurance training usually involves moderate intensity over longer durations without the high-intensity intervals. Volume intervals might refer to a different approach that emphasizes the amount of work done at a lower intensity rather than short bursts. Strength training focuses primarily on building muscle strength and does not typically incorporate the rapid intensity shifts that characterize HIIT. Thus, the characteristics and benefits of HIIT distinctly align with the question posed.