Sprinting for 40 seconds each day can make you 12% fitter
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Scientists at the University of Stirling found only 10 minutes of walking, interspersed with two 20-second bursts of sprinting as fast as someone can, could make an inactive person 12 per cent fitter.
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How many times should you sprint during training? - Quora
I have been doing 40 reps of 100 m sprints. Is this a good workout
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BENEFITS OF INTERVAL SPRINTING AND HOW TO GET STARTED — Chelsey Rose
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How to Perform 30 Second Max Sprints
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