high-intensity interval training

American  

[hahy-in-ten-si-tee in-ter-vuhl trey-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

Example Sentences

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

I do yoga, I do high-intensity interval training, I do circuits.

From Los Angeles Times • Oct. 4, 2023

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

That June, Reynolds wrote her first story about single-digit high-intensity interval training, or HIIT.

From Slate • Apr. 19, 2022

At the upper end of this range, interval-based cardio like spinning or high-intensity interval training can help burn calories and battle the slight loss of metabolism that comes with this age.

From Seattle Times • Oct. 18, 2021