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Sprint Interval Training (SIT)
Sprint Interval Training revolutionized exercise prescription by proving 4-6 all-out 30-second sprints with 4-minute recovery produce equivalent cardiovascular adaptations to 50 minutes of moderate cycling, as shown by McMaster University research. This protocol requires only 10 minutes of total hard effort, making it 20% more time-efficient than the Norwegian 4x4 Protocol for improving VO2max.
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