Cardio fitness

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people running on treadmills in a gym

Ever heard of the 10-20-30 workout? The training protocol refers to a specific interval format: run, bike row, etc. at a gentle pace for 30 seconds (low), accelerate for 20 seconds (medium) then push it for an all-out, 10-second sprint (high). Then repeat the set all over again. (Yes, the numbers are flip-flopped, but we […]

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