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A 22-year-old male asked:

Male 22. goal to increase stamina and left ventricle size. i do 30-45mins cardio a day. how much more to become as fit as athletes?

1 doctor answer1 doctor weighed in
Dr. Bennett Werner
Cardiology 44 years experience
Depends: Are you interested in simple cardio fitness or do you have olympic aspirations? For the former, you're doing enough now. For the latter, you haven't scratched the surface.

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Last updated Aug 5, 2013

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