It's not unusual for people to shudder on hearing the four letter word cardio, probably because they think of it as something that implies a not-so-healthy heart. Of course, cardio has something to do with the state of the heart. It also causes us feel better on our feeling fatigued for whatever reasons.
Follow this link:
http://www.articlesbase.com/health-articles/attain-good-health-through-cardio-exercise-3207985.html
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