high-intensity interval training

American  

[hahy-in-ten-si-tee in-ter-vuhl tray-ning] / ˈhaɪ ɪnˌtɛn sɪ ti ˈɪn tər vəl ˌtreɪ nɪŋ /

noun

1. a type of interval training for physical conditioning and fitness that uses short bursts of very intense exertion, alternating with short periods of rest or lighter exertion, to exploit the body’s systems for generating anaerobic energy. HIIT, H.I.I.T.

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Etymology

Origin of high-intensity interval training

First recorded in 1975–80

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Example Sentences

See Examples For:

high-intensity interval training

It’s a full-body workout combining yoga and Pilates moves with gentle high-intensity interval training bodyweight exercises — all performed on floating yoga mats in a swimming pool.

From Los Angeles Times ● Jun. 15, 2026

She also leads a program she created that involves nutrition, health and wellness education, running, and high-intensity interval training.

From Slate ● Oct. 15, 2024

In Lumin Fitness' darkened studio space in Dallas, Texas, LED screens line the walls from where AI personal trainers guide up to 14 gym goers at a time through personalised workouts or high-intensity interval training.

From BBC ● Jan. 3, 2024

They pointed to a 2021 review of more than 100 exercise studies that examined the effect on weight loss in adults of aerobic, resistance or high-intensity interval training in combination or alone.

From Scientific American ● Jul. 19, 2023

It’s common in endurance athletes or after an intense exercise session, like a high-intensity interval training workout.

From Seattle Times ● Feb. 9, 2022

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