HIIT

abbreviation or noun

: a form of interval training that alternates very brief periods (such as 20 to 40 seconds) of intense exercise at maximum effort with periods (such as 15 to 30 seconds) of less intense exercise : high-intensity interval training
HIIT, or high-intensity interval training, is a training technique that requires you to perform quick, intense bursts of exercise, followed by short and active recovery periods.Sudhakar Jha

Examples of HIIT in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
To increase your VO2 max, try out these types of exercise, experts say: HIIT. Caroline C. Boyle, USA Today, 13 July 2025 While both rings excel at detecting high-intensity HIIT workouts and long runs, neither the Ultrahuman nor Oura rings were great at identifying and monitoring low-intensity workouts like yoga and Pilates. Kristine Thomason, Vogue, 10 July 2025 Extraverts were linked to higher aerobic fitness, more powerful cycling performance, and greater enjoyment of intense workouts such as high-intensity interval training (HIIT). New Atlas, 8 July 2025 Participants who scored high in openness were less likely to enjoy the HIIT workouts and threshold rides — or cycling to boost aerobic power — which involved varying intensities. Lindsey Leake, NBC news, 8 July 2025 See All Example Sentences for HIIT

Word History

First Known Use

1994, in the meaning defined above

Time Traveler
The first known use of HIIT was in 1994

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Cite this Entry

“HIIT.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/HIIT. Accessed 20 Jul. 2025.

Last Updated: - Updated example sentences
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