interval training

American  

[in-ter-vuhl trey-ning] / ˈɪn tər vəl ˌtreɪ nɪŋ /

noun

1. an exercise and training program in which each session consists of periods of intense exertion alternating with periods of rest or lighter exertion.

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interval training British  

noun

1. Also called: fartlek.  a method of athletic training using alternate sprinting and jogging

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Etymology

Origin of interval training

First recorded in 1955–60

Example Sentences

Specifically, interval training enhances blood glucose control, which helps reduce the risk of developing type 2 diabetes.

From Science Daily • Oct. 20, 2025

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

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

From Los Angeles Times • Oct. 4, 2023

The beauty of the fartlek is that, unlike in traditional high-intensity interval training workouts, walkers or runners don’t have to glue themselves to a watch or a fitness tracker to boost their muscular endurance.

From Seattle Times • Oct. 4, 2022