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Can You Get Fit in Just 4 Minutes a Day?

Researchers suggest four minutes of strenuous exercise can boost your cardio health.
02:05 | 06/20/2013

Transcript for Can You Get Fit in Just 4 Minutes a Day?

We told you last month about the seven-minute workout. You're wasting time. Maybe you need a faster way to get fit. Just four minutes a day. Abc's claire shipman has more on what is certainly the... See More
This transcript has been automatically generated and may not be 100% accurate.
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