HIIT

abbreviation or noun

ˈhit 

: 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

The new Fitness+ pickleball program will feature a variety of workouts, including strength-building activities and high-intensity interval training (HIIT), designed to help your game. —Andrew Gebhart, PCMAG, 3 Jan. 2025

There were cold plunges and microdosing explainers, HIIT workouts led by Jillian Michaels, and neuroscience chats with Andrew Huberman. —Caitlin Gunther, Condé Nast Traveler, 27 Dec. 2024

For that next pilates class or HIIT circuit, wear an oversized silhouette from Anine Bing beneath a cool-girl trench and atop a cashmere hoodie. —Cortne Bonilla, Vogue, 16 Dec. 2024

For You Some people are ditching HIIT workouts in favor of steady-state cardio workouts. —Maggie O'Neill, Verywell Health, 16 Dec. 2024

Word History

First Known Use

1994, in the meaning defined above