What is the structure of interval training?

Interval training is characterized by alternating periods of high-intensity exercise with periods of rest or low-intensity activity. This approach allows individuals to work at a higher intensity for shorter bursts, which can lead to improved cardiovascular fitness, speed, and overall athletic performance. The high-intensity segments challenge the body, while the rest periods help with recovery before the next intense effort.

The other options represent different types of exercise programs. Continuous low-intensity workouts focus on maintaining a steady pace without significant variations in intensity, which does not align with the variable nature of interval training. Walking at a steady pace also indicates a singular intensity level throughout the workout, lacking the alternating effort typical of interval training. Lastly, while strength exercises can be performed in an interval format, this option is too narrow, as interval training encompasses various cardio and aerobic activities and is not limited to strength workouts.