Men's Health
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Life Time's
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@gerrenliles
Jun 22
PDTDavid Freeman
Freeman—
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We're also hosting live workout sessions on Instagram with some of our favorite trainers to fill the fitness class-shaped void in your daily routine. The strength interval workout will challenge you to use your muscles and work as hard as possible in short bursts of effort—in this case, 30 seconds of work.
As said here by https://www.menshealth.com/fitness/a32970291/home-workout-intervals-kettlebell/