What is described as a "work period" in interval training?

In interval training, the "work period" specifically refers to the duration of intense exercise. During this phase, athletes exert themselves at a high intensity, typically working at a rate that is significantly above their normal endurance level. This part of training is critical because it targets improvements in various physiological attributes, including VO2 max, anaerobic capacity, and overall speed and power.

By incorporating high-intensity bursts followed by lower-intensity recovery or rest periods, interval training optimizes the benefits of training while also allowing for recovery before the next intense effort. This structure is what makes interval training effective for improving overall athletic performance.

To better understand the incorrect choices, the rest period between different exercises allows for recovery but does not contribute to the work phase itself. The overall training session time encompasses both the work and rest periods, rather than highlighting the specific intensity of the work. Lastly, the time spent in cool-down activities is meant for recovery and should not involve high-intensity efforts, thus making it unrelated to the concept of a work period in interval training.