high-intensity interval training: meaning, definition, pronunciation and examples
B2Informal (predominantly in fitness contexts), Technical (in exercise physiology)
Quick answer
What does “high-intensity interval training” mean?
A form of exercise consisting of alternating short, very intense anaerobic bursts of activity with periods of less intense recovery or rest.
Audio
Pronunciation
Definition
Meaning and Definition
A form of exercise consisting of alternating short, very intense anaerobic bursts of activity with periods of less intense recovery or rest.
A structured exercise protocol used for improving athletic performance, cardiovascular fitness, and metabolic health. The acronym HIIT is extremely common. It can also refer metaphorically to any intense, punctuated period of activity.
Dialectal Variation
British vs American Usage
Differences
Spelling is consistent. The acronym 'HIIT' is universally used. Terminology for describing sessions (e.g., 'circuit' vs. 'workout') may vary slightly.
Connotations
Identical strong connotations of efficiency, intensity, and modernity in fitness culture.
Frequency
Equally common and widely understood in both dialects due to globalised fitness trends.
Grammar
How to Use “high-intensity interval training” in a Sentence
[Subject] does HIIT.[Subject] incorporates HIIT into [possessive] routine.A [duration] HIIT session involves [activity].Vocabulary
Collocations
Examples
Examples of “high-intensity interval training” in a Sentence
verb
British English
- I try to HIIT twice a week. (Informal, verbing of the acronym)
- The programme has you hiiting for 30 seconds, then resting.
American English
- She HIITs every Monday and Thursday.
- We were HIITing for a solid 20 minutes.
adverb
British English
- The class was run HIIT-style, with short, sharp bursts.
- They train high-intensity intervally. (Extremely rare/awkward)
American English
- We worked out HIIT-style for maximum efficiency.
- The routine is structured high-intensity intervally. (Rare)
adjective
British English
- She's a big fan of HIIT workouts.
- They followed a high-intensity interval training programme.
American English
- He joined a HIIT class at the gym.
- The app offers high-intensity interval training routines.
Usage
Meaning in Context
Business
Used metaphorically in productivity or management contexts to describe periods of intense focus followed by breaks. ('We work in a kind of HIIT model.')
Academic
Used precisely in sports science, physiology, and public health research papers to describe the intervention protocol.
Everyday
Common in discussions about gym routines, fitness apps, and personal health goals.
Technical
Specific to exercise physiology, with precise definitions of work:rest ratios, intensity (%VO2max or %HRmax), and modality.
Vocabulary
Synonyms of “high-intensity interval training”
Strong
Neutral
Weak
Vocabulary
Antonyms of “high-intensity interval training”
Watch out
Common Mistakes When Using “high-intensity interval training”
- Saying 'a HIIT' (it's uncountable). Correct: 'I did some HIIT yesterday.' / 'I did a HIIT session.'
- Confusing HIIT with just any hard workout; HIIT specifically requires structured intervals of maximal/near-maximal effort.
- Misspelling as 'high-intensity intervall training'.
FAQ
Frequently Asked Questions
It depends on goals. HIIT is often more time-efficient for improving cardiovascular fitness and metabolic health, but steady-state cardio has its own benefits, such as being lower impact and good for building endurance. A mix is often recommended.
A typical HIIT session, including warm-up and cool-down, often lasts between 20 to 30 minutes. The high-intensity work intervals themselves usually total only 10-20 minutes.
Yes, but beginners should start cautiously, with shorter work intervals, longer recovery periods, and at a modified intensity. It's advisable to consult a professional and build a basic fitness level first.
HIIT is the acronym for High-Intensity Interval Training.
A form of exercise consisting of alternating short, very intense anaerobic bursts of activity with periods of less intense recovery or rest.
High-intensity interval training is usually informal (predominantly in fitness contexts), technical (in exercise physiology) in register.
High-intensity interval training: in British English it is pronounced /ˌhaɪ ɪnˌten.sə.ti ˈɪn.tə.vəl ˌtreɪ.nɪŋ/, and in American English it is pronounced /ˌhaɪ ɪnˌten.sə.t̬i ˈɪn.t̬ɚ.vəl ˌtreɪ.nɪŋ/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “Go hard or go home (spirit of HIIT)”
- “Sprint and recover (descriptive of method)”
Learning
Memory Aids
Mnemonic
HIIT sounds like 'HIT' – you 'hit' your body hard for a short time, then take a break.
Conceptual Metaphor
EXERCISE IS A PULSE / EXERCISE IS A SPRINT (vs. a marathon).
Practice
Quiz
Which of the following is NOT a key characteristic of traditional high-intensity interval training?