What is High-Intensity Interval Training? High-Intensity Interval Training (HIIT) is a popular workout method that involves short bursts of intense exercise followed by brief recovery periods. It is known for its effectiveness in burning calories and improving cardiovascular fitness in a short amount of time. HIIT workouts typically last between 20-30 minutes and can be done with a wide variety of exercises, such as running, cycling, or bodyweight movements. The…