Extreme Cardio Exercise May Harm Heart
A recent study from the Mayo Clinic shows excessive endurance training can overwhelm the heart.
http://www.wusa9.com/video/1676934796001/1/Extreme-Cardio-Exercise-May-Harm-Heart
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Extreme Cardio Exercise May Harm Heart
A recent study from the Mayo Clinic shows excessive endurance training can overwhelm the heart.
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