What does the acronym HIIT stand for in exercise terminology?

What does the acronym HIIT stand for in exercise terminology?

• A. High Impact Internal Training
• B. High Intensity Interval Training
• C. High Intensity Integrated Training
• D. High Intensity Intermittent Training

Answer: (B)

HIIT stands for High Intensity Interval Training, a method that alternates short, very hard work bouts with brief recovery periods. High Intensity means you push near maximal effort, typically a level that challenges your cardiovascular system. Interval points to the structured pattern of work and rest, which lets you sustain high effort across multiple bouts and train both aerobic and anaerobic systems efficiently. An example is sprinting hard for 20–30 seconds followed by 30–60 seconds of easy recovery, repeated several times. While phrases like High Impact Internal Training, High Intensity Integrated Training, or High Intensity Intermittent Training are sometimes heard, the standard term used in fitness communities and research is High Intensity Interval Training because it clearly signals the alternating work-rest structure that defines this approach.

HIIT stands for High Intensity Interval Training, a method that alternates short, very hard work bouts with brief recovery periods. High Intensity means you push near maximal effort, typically a level that challenges your cardiovascular system. Interval points to the structured pattern of work and rest, which lets you sustain high effort across multiple bouts and train both aerobic and anaerobic systems efficiently. An example is sprinting hard for 20–30 seconds followed by 30–60 seconds of easy recovery, repeated several times.

While phrases like High Impact Internal Training, High Intensity Integrated Training, or High Intensity Intermittent Training are sometimes heard, the standard term used in fitness communities and research is High Intensity Interval Training because it clearly signals the alternating work-rest structure that defines this approach.