HIIT

abbreviation or noun

ˈhit How to pronounce HIIT (audio)
: 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.
The other days are cardio which are set up like HIIT classes. — Holly Carter, PEOPLE, 8 Apr. 2026 The Alo Wellness Club is built into the hotel app, offering on-demand pilates and HIIT. — Eman Bare, Forbes.com, 13 May 2026 Breathable mesh uppers allow for plenty of airflow to keep your feet cool on hot summer runs and sightseeing days alike, while the double lace lock keeps the tongue in place during active HIIT classes. — Sophie Dodd, Travel + Leisure, 9 May 2026 He's shared his blood panels, sleep scores, HIIT workout protocol, heart rate, muscle oxygen saturation and myriad intricate biomarkers. — Alyssa Goldberg, USA Today, 5 May 2026 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

Browse Nearby Words

hi-hat
HIIT
Hiiumaa
See all Nearby Words

Cite this Entry

“HIIT.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/HIIT. Accessed 7 Jul. 2026.

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