interval training
noun
: a method of physical training that involves alternating brief periods (such as 1 to 2 minutes) of intense exercise with longer periods (such as 3 to 5 minutes) of less intense activity
This challenging 45-minute routine uses a strategy called interval training—alternating high-intensity activity with periods of "active rest," or lower-intensity exercise.—
Troy DeMond
Troy DeMond… interval training works both the aerobic and the anaerobic system. During the high intensity efforts, the anaerobic system uses the energy stored in the muscles (glycogen) for short bursts of activity.—Donna Cotnam
see also high-intensity interval training
Donna CotnamExamples of interval training in a Sentence
Recent Examples on the Web
La Costa’s group fitness classes span everything from yoga, spin, and Pilates to power boxing, high intensity interval training, and cardiovascular boot camp.
—Joe Yogerst, Forbes.com, 15 Aug. 2025
Incorporate high intensity interval training (HIIT) into your workout routine, recommends Mason.
—Caroline C. Boyle, USA Today, 13 July 2025
To maximize fat loss, focus on high-intensity interval training.
—Fred Sassani, Austin American Statesman, 2 July 2025
The run-walk method can be considered a form of interval training, or alternating between higher- and lower-intensity efforts, said Dr. Tamanna Singh, the co-director of the Sports Cardiology Center at the Cleveland Clinic.
—The New York Times, San Diego Union-Tribune, 27 May 2025
In the Great Smoky Mountains of Tennessee, Blackberry Mountain has launched a HIIT experience that combines interval training with hiking excursions.
—Mary Holland, Travel + Leisure, 13 Apr. 2025
The organization also offers personalized coaching as well as classes in high intensity interval training, kickboxing, boxing and Brazilian jiu-jitsu conditioning.
—Brendan Coffey, Sportico.com, 1 Mar. 2025
Instead, schedule two of your weekly sessions to be around an hour long and use that time to work on interval training, which will increase your pedaling power and endurance.
—Alyssa Ages, Outside Online, 31 Jan. 2025
Do one of the following activities for 30 seconds between exercises and turn your regular workout into high intensity interval training.
—Fred Sassani, Austin American-Statesman, 31 Jan. 2024
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Joe Yogerst, Forbes.com, 15 Aug. 2025
Incorporate high intensity interval training (HIIT) into your workout routine, recommends Mason.
—Caroline C. Boyle, USA Today, 13 July 2025
To maximize fat loss, focus on high-intensity interval training.
—Fred Sassani, Austin American Statesman, 2 July 2025
The run-walk method can be considered a form of interval training, or alternating between higher- and lower-intensity efforts, said Dr. Tamanna Singh, the co-director of the Sports Cardiology Center at the Cleveland Clinic.
—The New York Times, San Diego Union-Tribune, 27 May 2025
In the Great Smoky Mountains of Tennessee, Blackberry Mountain has launched a HIIT experience that combines interval training with hiking excursions.
—Mary Holland, Travel + Leisure, 13 Apr. 2025
The organization also offers personalized coaching as well as classes in high intensity interval training, kickboxing, boxing and Brazilian jiu-jitsu conditioning.
—Brendan Coffey, Sportico.com, 1 Mar. 2025
Instead, schedule two of your weekly sessions to be around an hour long and use that time to work on interval training, which will increase your pedaling power and endurance.
—Alyssa Ages, Outside Online, 31 Jan. 2025
Do one of the following activities for 30 seconds between exercises and turn your regular workout into high intensity interval training.
—Fred Sassani, Austin American-Statesman, 31 Jan. 2024
Cite this Entry
“Interval training.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/interval%20training. Accessed 31 Oct. 2025.
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