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Forty-five seconds of work, fifteen of rest, eight rounds that advance on their own with a chime at every change. The split fits circuit stations and steady conditioning: the effort is honest, and the rest keeps quality high.
Pick the page whose split fits the work: HIIT 30/10 for sharp efforts, Tabata 20/10 for the classic four minutes, or the workout 40/20 for longer stations. Each runs the same way.
The final work block. Rests start on their own throughout, and the closing chime sounds when the eighth round of work ends.
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