Understanding High-Intensity Interval Training (HIIT)

High-intensity interval training (HIIT) is defined as exercising above the second lactate turn point. It typically includes shorter bursts of effort lasting just minutes, requiring intervals to accumulate sufficient work without lasting hours. The concept of HIIT is often misunderstood; many people perceive it as enjoyable, but for elite athletes, it is associated with considerable mental and physical strain. This highlights the need for proper definitions and understanding of what constitutes effective high-intensity training.